[Imp]

Not got time to look at the evidence but a few things
You said RPG 29 should be able to defeat Abrahms from the front, guess what in game it can though need a bit of luck. Fail or damage more likely result so its about right. RPG 28 now thats a kill most likely on a hull hit.
As a note not one of these guys answering is American so theres no patriotism here just best guess based on the reliable info available as the whole game is.
The other thing you pointed out was Merkerva Mk4 & ATGMs which I played a lot recently & on the odd occasion you will get a surprise mobility kill so thats not far off either.
You cant seriously think the game is slanted to the West Abrahms or T-90A in game I would say the Russian tank has better battlefield survivability by quite a margin, no soft belly & very good ERA pack on top of the armour