We've "played" on multiple rides and swapped back and forth several times. Nobody is going to argue that the 1330 puts down more power than a stock 998. It better.... The difference we've found is simply weight. With similar sized riders on both, the RS is faster, especially the first gen GS/RS. Now, lighten that F3 up about 100lbs and things get more even, quickly.
In the twisties the better riders are quicker on the RS. It's the ability to throw around in the corners, for those that dare to hang off the side. However, The F3 is easier to ride quicker, especially for the generally slower riders. It's harder to move the body around since your butt is stuck in that seat, and your only movement is in the upper body.
All 3 machines are completely different, and serve different preferences.
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