It is current W/L.
The data was extracted from http://www.companyofheroes.com/en_gb/coh2-leaderboards
Now i checked if there are copies of it in internet archive.
Turns out there is only one copy from Feb 2014 and the number of games played is similar to the ones from now. My guess is that there was a stats reset after WFA. Unfortunatelly i wont be able to do comparisons because of only this one old copy.
I agree that its hard to conclude anything useful but it gives an impression that okw is the strongest overall and soviet weakest.