No the Mirage of 2000 is better than the Sabre of the 60's, similarly the Teja of 2040 will be better than grippen of 2010. That is what is meant by comparing the two.
Everything in INDIAN articles is saying this new item will come. that will come. Just tell us what the SAMOSAA can do today. Why are they not telling how it stands today (Disowned and a compromised acceptance by the IAF)
Any service worth its salt will try to get the best equipment for its soldiers, sailors or airmen. That is, unless their country is hopelessly compromised by a desperate, or even failing economic situation. India is going through a bad time due to the mismanagement of the economy by the present central government, partly also due to the pandemic, that has affected many economies, not just ours. Nevertheless, it is far from a desperate, or even a failing economic situation.
What does this lead to?
It leads to an impulse among all the services to get the best that they can. It led to the heavy purchases of Flankers, for instance, tailormade to the requirements of the IAF, but still not equipped with sufficient care; it then led to the purchase of the Rafale, that is supposed to meet some of the gaps between the Flanker and a light aircraft such as the Tejas, and to allow deployment of an intermediate aircraft between the two.
In the Army, it leads to a concentration on Russian tanks, because the soldiers and officers were already used to the ways of the very light but very strongly protected Russian tanks that were 15 tonnes below the weight of equivalent western tanks, or even of the home-made Arjun.
With regard to artillery, a decision was taken to standardise on the 155 mm calibre for all field artillery, and that is the effort that is going on now, in several directions simultaneously, to raise the artillery strength to what it should be.
The Tejas is fit to fly and fit to fight today. The efforts that are under way are to replace the major systems still left out and retrofit them into the existing aircraft. The AESA radar is no rocket science, but none of the radar scientists from the DRDO lab that works on radar exclusively had anticipated a sudden demand for an aircraft compatible version, and it took several years to miniaturise the radar sets (they call the aircraft ready version Uttam, excellent). Meanwhile, the Tejas is not going into battle without radar; all aircraft have been equipped with the ELTA ELM-2052. Now, the present effort is to replace all the Israeli radars with our own, as it is desirable to indigenise as much as possible, as soon as possible,
Another reason why the Uttam is being fitted on with the best possible despatch is that the Tejas, on being fitted with the Uttam, will be integrated to the MBDA Meteor, that is already fitted onto the Rafale and integrated to its Thales AESA radar.
Is there any part of this that you could not understand?