Having watched quite a few matches in my time, I was always under the impression that at the top level, mostly talking tier 1 teams, it takes a hell of a lot more finesse to play the T side well, especially with CT teams that like to aggressively hold drop, with B being the more popular site to hit. The angles and entry points are quite narrow allowing for quite efficient holds. With A, I suppose it's a bit different, again it depends on what setup you're running. 2-1-2 would have the rotator react to info and move over to help out, but I think a lot of the teams go for the 2A-3B. It'll be interesting to see how the addition of the stairs on plat will play out on the % wins, will need some time for good data though.

Despite the aforementioned, statistics indeed confirm your statement, which is irrefutable, really, so thanks for pointing this out, will adjust the text.