Statisticians often exclude outliers when studying variables (factions in this case). Studying the win streaks of the top 10 is studying the outliers of the outliers. I'm not sure it really tells you anything beyond what faction some of the top players like to play.
Ah, well, I think Elchino was asking if it would be possible to basically recreate the statistics that was formerly available on coh2charts, so that is what my answer is about.
Regarding winstreaks: Yes, it probably is more a reflection of when people play. That said, it might not actually as bad as one might think. Certainly, you'd need to employ some robust averaging method to take out the outliers. The biggest issue that I see is that the ensemble is tiny and that it is not clear over which period the streaks happened...
Still, my answer would still apply here, I'm not a big fan of using numbers from automatch to gauge faction balance...