good post, I agree with u that it requires a different skill set and much more pre-flop play and strategy relative to position. BUT, I also think the LUCK does factor into it POST-flop more than it would in a standard structure game. One reason being that if you are raising pre-flop in EP with Q9s to push out any small pps or small aces, it may backfire on u when that cowboy calls with his raggy ace and stays to the river. I like turbos sometimes, but I find there are a lot of different goofy styles clashing in these games at high speed and the luck of the turn and river dictates who gets ITM when all the chips are in pre-flop.
50% is a great ROI, but I guarantee it won't last, on-line variance will always have the last word on that subject, regardless of experience and skills.