http://coh2chart.com/
Consistently so for some while now. If we dont believe in data, then its still at least one of the stronger 1v1-factions and not to be advertised with "still sucks, don't use them".
Here's how it works I think:
OKW vs USF, usf has slight advantage.
USF vs Wehr, Wehr takes a dump on USF.
Wehr vs Soviets, soviets rape Wehr with light vehicles. (QUAD!)
So more players are using OKW to better counter quad/t70/su76, therefore USF has more wins. If the only factions ingame were USF and Wehr right now, I think that the data would be hoorriibbblllleeeee.