I think you're still missing the point. The discussion about the new FD has to do with increasing the usability of all gearing options without any chain rub, not shifting performance. Yes, my current set up with Rival FD and Rotor Q rings shifts fine but I do get chain rub. By having the FD cage angle itself as you shift it should eliminate any chain rub.
Originally Posted by
Rutnick
I can already use all the big ring gears without rubbing. I can run about 8 in the small ring without rubbing. If you are in 9th or 10th in the little ring in the front and think you need those gears, good for you.
That's still not helping shift performance.