Realistic though would you feel Comfortable with 300mm bars and no brakes on your current dh tracks?I dont think the "confidence" argument is all that relevant, when compared to actual numbers...
I could feel confident with 300mm bars and no brakes - would that mean I am faster than if I were to have a normal set up?
You can't dispute confidence there are guys finishing out side the too 20 who are just as physically and skillfully as fast but mentally they can't compete and reach that next level.
I know for a fact mentality can make a big difference not small but leaps of difference upto a other level.
If we look at the top guys of course we see less variation as most as so highly developed in all aspects, you need to look further down the result sheet or at the guys who excel at state and national levels to see the difference in mentality where we can compare those who don't have confidence.