What about what? Allies get high pen TDs, Axis do not.
The big armor advantage is a myth, both sides are roughly on par.
Axis get a few outliners, and Allies get stock TDs with high pen to deal with them.
We dont't even needs to go t4 to prove this.
p4: 180 to 234
p4j: stock 234
Even its medium has only 36 lower armor than Pershing. Every tank from t4 has higher armor.
Only UKF has some decent armor tank(comet), but the faction itself is just too broken to play.
1v1 isall about early inf fight to mid-late tank + AT fight. And that armor diff in medium makes a big difference. Just think about why so many soviets go for t34-85. (Sadly e8 for USF is a bit crippled to go for...)