You sir, need to stop blindly accepting everything. I have provided the text to you.
I can say you
Neem hakeem khatra e jan, Neem mulla khatra iman
First: in your given scripts you didn't gave any link or source.
Second: if it is your observation then you know nothing about script writing their meanings and difference of understanding by a native reader or non native reader. You just made your post to prove yourself, advise for you get some knowledge first or there is no need to go wrong because lack of proper knowledge.
Difference you showed in you post is called script variety or difference of script, first script called as KUFIC SCRIPT;
KUFIC SCRIPT
Kufic is the oldest calligraphic form of the various Arabic scripts and consists of a modified form of the old Nabataean script. Its name is derived from the city of Kufa, Iraq, although it was known in Mesopotamia at least 100 years before the foundation of Kufa. At the time of the emergence of Islam, this type of script was already in use in various parts of the Arabian Peninsula. It was in this script that the first copies of the Qur'an were written.
THULUTH SCRIPT
Thuluth (Arabic: ثلث‎ ṯuluṯ "one-third", Turkish: Sülüs) is a script variety of Islamic calligraphy, which made its first appearance in the 11th century CE (fourth Hijri). The straight angular forms of Kufic were replaced in the new script by curved and oblique lines. In Thuluth, one-third of each letter slopes, from which the name (meaning "a third" in Arabic) comes. It is a large and elegant, cursive script, used in medieval times on mosque decorations. Various calligraphic styles evolved from Thuluth through slight changes of form.
Thuluth was used to write the headings of surahs, Qur'anic chapters. Some of the oldest copies of the Qur'an were written in Thuluth. Later copies were written in a combination of Thuluth and either Naskhi or Muhakkak, while after the 15th century Naskhi came to be used exclusively.
This font is much seen in Flag of Saudi Arabia where its text, Shahada al Tawhid, is written in Thuluth.
-This kind of calligraphy is known as the "mother" and origin of all calligraphy. All calligraphers have to master this kind of handwriting, which is the most difficult, followed by the Naskh, which means "copying," as the Qur'an was copied in that script, and then the Farsi or Persian script. The naming of the Thuluth script goes back to the standard Tumar pen, which is the biggest pen and has a width of 24 horsehairs. The Thuluth pen was a third of this standard pen and made of eight hairs. There were half (12 hairs) and two-thirds (16 hairs) pens as well. This idea goes back to the calligrapher and minister Ibn Muqla, who set the rules of the Thuluth script.
-The Thuluth script is used to write on the walls of mosques, minbars (pulpits), domes, facades, museums, as well as newspaper headlines and books. This script was used in the openings of the surahs of the Qur'an and in epigrams. Thuluth script is also known for the tendency to make artistic forms (tashkil) with it.in calligraphy, medieval Islamic style of handwritten alphabet. Thuluth (Arabic: "one-third") is written on the principle that one-third of each letter slopes. It is a large and elegant, cursive script, used in medieval times on mosque decorations. It took on some of the functions of the early Kufic script; it was used to write surah (or sura; Qur'anic chapter) headings, religious…
-The structure of this script, and the way it is laid out offer higher plastic qualities and better aesthetic treatments. It is no wonder that this script has been called "The mother of all scripts". It has been known for centuries that if a calligrapher wants to prove his competence, he would have to be able to write an excellent Thuluth.
Second script is Naskh derivation from Thuluth script
NASKH SCRIPT
Naskh was one of the earliest scripts to evolve. It gained popularity after being redesigned by the famous calligrapher Ibn Muqlah in the 10th century. Because of Ibn Muqlah's comprehensive system of proportion, Naskh style displays a very rhythmic line.
Naskh later was reformed by Ibn al-Bawaab and others into an elegant script worthy of the Qur'an - and more Qur'ans have been written in Naskh than in all the other scripts together. Since the script is relatively easy to read and write, Naskh appealed particularly to the general population.
Naskh is usually written with short horizontal stems -- and with almost equal vertical depth above and below the medial line. The curves are full and deep, the uprights straight and vertical, and the words generally well spaced. Currently, Naskh is considered the supreme script for almost all Muslims and Arabs around the world.
Naskh Scripts - Kakayi
This was brief introduction because it was necessary to clarify the system of writing Quran e Pak and development of script witting with variation in styles. Now I am coming to topic: look at alphabetic and pictures “Kufic_Quran_7th_Cent” and “Koran, 9th c.; Manuscript of the Chapter Mary”. You can’t read script of 7th century or before but people in Arabic world who used to read this script or who have knowledge to read it, they can read it easily with all correct pronunciations but without pronunciation signs. This was their native language. Ok lets step further, OLD KUFIC and MIDDLE KUFIC script was not understandable in outside Arabic world as Islamic empire opened news doors so after 10th century Thuluth script took place of KUFIC where after NASKH script exclusively used for writing Quran e Pak. Where pronunciation signs were added in Umayyad dynasty. I personally practiced that once I check Quran e Pak printed in Beirut, Cairo, Jeddah, Tehran, Rawalpindi/Lahore, I couldn't read Quran e Pak smoothly which were printed in Beirut, Cairo, Jeddah but Quran e Pak printed in Tehran, Rawalpindi/Lahore I could read smoothly although all were in Naskh script but difference was pronunciation signs. In first three copies style of signs were same but complicated but in later copies there were simple signs easy to understand for me or for people non Arabic but same first copies were read smoothly by a Arabic person to whom I request to read.
Positions marked by you also not right because for example in last picture you circled word “SA” PLAIN in KUFIC and styled with three tiny lines additional to plain in NASKH so why a simple example is not followed by you that same as in URDU we used to write “SA”(SEEN ALIPH) with both styles plain and modified styled. Next check picture
“Koran, 9th c.; Manuscript of the Chapter Mary; Kufic script on gazelle skin; Mevlâna mausoleum; Konya, Turkey “ actual picture in KUFIC but in border written same word in NASKH rough handed.
Arabic alphabet in Kufic script, cropped from page 4 of Fry's Pantographia (1799)
Kufic_Quran_7th_Cent
Koran, 9th c.; Manuscript of the Chapter Mary; Kufic script on gazelle skin; Mevlâna mausoleum; Konya, Turkey
Folio from a Koran (8th-9th century)
Qur'an folio 11th century kufic
Uthman Qur'an - Kufic
Check KUFIC script variation from 7th century to 11th century and put attention on curves of every word. In fact there is no change but knowledge is main problem. Quran e Pak was same and is same and will be same with no changes because god itself protect this book from any corruption. 
