So you're basically denying the fact that Axis has a better late game and you can't see any connection between the percentage of axis-won games after the 30- or 40-minutes-mark and the performance of axis and allied armour. Serioulsy?
Honestly I am against having heavies or super heavies in the game in first place. They reward you for playing campy and stalling the game. Where is the point in that? CoH2 already feels much more static than it's predecessor. Heavies are just amplifying that.
Do you have the data to back that up? Allies have some pretty significant late game power in the form of ISU, IS2, Jacksons, T34/85s, Mark Target, P47s, B4, etc (like I already mentioned). Are you going to try to deny that these are ineffective units? OKW can save up all game for a KT only to have it killed instantly by the ridiculously common tactic of t34/85s + mark target and P47s.
As for your second point, I feel like you didn't actually play CoH1, otherwise you'd remember the fun that was the British and also Wher t2 (defensive and terror). Both SUUUUUPER mobile and not static playstyles. Also it wasn't like you saw them frequently or anything.... /s