Hold up in terms of accuracy, felt recoil, dot/sights back on target quickly, etc.... in comparison to a heavier, steel frame, higher end 2011's against a timer.
I've only shot a couple of 9mm 2011's, Atlas, MPA, and various Staccatos (demo day). With the MPA Limited Optics Competition model, I was able to run it fast for about 10 shots and it was very, very flat shooting.