Congrats! I'm a former national champion marksman. I hope you were twice as good or more as a noobcake out of the street. I know I was.
Not sure that either proves anything though!
However.. this: http://www.youtube.com/watch?v=6oHFLfe9zaU
20% overall advantage for a maxed toon vs a mediocre one? If that's what you mean I am pretty sure noone will spend the extra few hundred hours for something that won't really make a difference. Because you see being 20% stronger won't mean that you will win significantly more often. Just that you will win slightly more than joe sixpack.
So yea.. 20% better overall, if that's what you truly mean would definitely kill any effort ppl are putting into this game and it would be a sad way to end the game.