Well Pedrosa is a featherweight. To be as small as him and in riding shape amazes me. Using myself as an example I am 6'0 and I have had my body fat calculated to show that I hit around 168 with no fat whatsoever and I am not hugely muscular at all. For me to get into the shape they are in I end up being 190-200 which would be far too heavy to compete. I would also put myself at about average, maybe slightly taller and more of an athletic build than average but around that point. My point is that I am an average person and there is no real way I could achieve the maximum level in motorcycle racing. That fact alone shows that there is at least a problem, maybe not one we can or should try to fix but it exists.
Like what I said in my earlier post injuries are an odd case and really need to be ignored in this argument. If you have some data that shows that smaller people take significantly more physical harm from the same impacts I would be interested to see but I really can't see that being the case.
sorry, finals time so this draft was open for a few days and I forgot to post xD
Also, I thought some, or most, of you could use this.
You want to be higher up on the pyramid btw.