7.5 = the end of heavies and the dawn of MBT?

Type_96, on Jul 13 2012 - 00:15, said: so, judging by the notes so far, heavy tier Xs are not getting much help. on the other hand, tier X mediums all pack significant fire power (260 pen) able to penetrate most heavys from the front. Armor is essentially useless now. mobility and ability to wolfpack seem to be much more vital than sheer armor. will we see 10 mediums supported by 4 arties and 1 heavy in CW soon?
P.S. the batchat will now have 1800 hp, while the IS7 has 2150. the batchat can unload ~2400 damage in 5 seconds, the IS7 is still reloading after firing the first shot. GG?!