AK's use 7.62x39 mm cartridge, the shoddily written article is about 7.61x51 Nato round. The idiot is comparing a Full size rifle round with a intermediate cartridge. "
You totally missed the point. The article is based on stupid media reports that army junked 5.56 for it's infantry and looking for 7.62x51. Conventional war, engagement happens with in range of 300m where 5.56 is effective enough and so it's accuracy. The article is focussed on logistics and carrying a huge 7.62x51 rounds. You can carry three 5.56N ammo against one 7.62x51 ammo. In high altitude warfare it's madness to carry huge 7.62x51 ammo. It's even difficult to breathe. Availability of ammo is important, so does the conservation of fuel and sorties by trucks to transfer ammunition. 7.62 is becoming extinct. World is investing heavily on 5.56 making it more lethal. Recently USMC adopted 5.56 ammo
http://www.thefirearmblog.com/blog/2010/02/17/usmc-adopt-new-5-56mm-mk318-mod-0-ammunition/
The article is completely made on whether it's suitable to ise a huge ammo in such terrains. The Russians largest user of 7.62 switched to 5.45 AK74 as their primary weapon for Russian armed forces and so did Israel. The cost of 5.56 is less than 7.62 and used by many countries. In war, it'll be an added advantage if the ammo you used is same as your ally to increase availability. US infantry troops uses 5.56 and they're given covered by heavy calibers. US uses 5.56 for even sniping. Different weapons and calibers are disaster. Battle is won by logistics, without logistics support, battle is lost before it begins. I have fired many rounds in different weapons. Thrust do affect accuracy and in case of 7.62x51 rounds, it's thrust is so high that it even miss the target, what to do with it's lethality ? It aches shoulder after firing 7.62x51 for long.
Later it's cleared that the RFI for 7.62x51 caliber assault rifle was for amphibious assault rifles. Don't take the article as rocket science. It's simple. If you got the focus of the article, all your comments are irrelevant.
"Also the author too is confused about 7.62 being used in counter terror, in that case the round he actually referring to is the 7.62x 39 mm."
You're correct about 7.62x39 used for CI Ops. If you're sensible enough there's no need to elaborate a round used for CI ops. One can easily understand that.