Panasonic 35-100 at 75mm vs. Olumpus 75mm Prime?

Has anyone done a comparison of image quality between these two lenses at 75mm?

Since the 75mm is superb, while the 35-100 is merely very good, I'd assume that the prime would be better, but is it by a significant amount? Does anyone have pictures from both of these at that zoom? Also, I am curious at comparing the 35-100 at 100mm vs. the 75mm Olympus. Do we end up with the same amount of information, given the 64's better IQ?

Finally, have Olympus camera users, mainly the em5, noticed significant issues with the 35-100 because Panasonic lets its lenses have a certain amount of distortion and corrects in-camera?