As my first post was on-topic, I'll repeat it in short:
SU and US are different factions, and are meant to be that. Therefore a comparison of one's level of play for one with that for another isn't representative, or, at least, not without a flaw. Just like it would be ridiculous to compare the level of one's play for wehr and for PE, resulting in any kind of conclusion on OPness or UPness of either of them.
That, of course, is only my humble opinion.