That barely gives us any real detail tho, as you urself pointed out at one point (i think)
At best you can use it dispel extreme generalizations like the one OP is making here
I mean if you remove Advanced Inf/Coastal, im pretty sure USFs/Wehrs winrate plummets. At least in team games i think it would, i cant speak for 1v1. But US seems very strong 1v1 no matter what BG
"Closer to perfect balance than we ever had in CoH history" is complete nonsense. CoH2 2v2 has been that even in winrates for a few years now. And i doubt anyone would describe that game as well balanced
To add a bit more context, its all mp games for 2s(since OP posted screenshots from 2s) since 1.4 dropped, so games exclusively with current patch.
And while coastals definitely carry wehr hard, I don't think adv inf has same impact on USF as it adds more of what they already had.
Also, CoH2 is balanced around tight meta, you deviate, you lose.
CoH3 offers a variety of options, there is top level 1v1 meta, but other than that, you actually have options across all battlegroups and tiers.
In simpler words:
Units in CoH2 are balanced.
Units in CoH3 are balanced and useful/practical.