I didn't say anything about training, because training has nothing to directly do with competing.
I was talking about competing. I don't care how they train. The purpose of competing in the event is to win, and in those circumstances, gear should be normalized as much as possible. There are always going to be differences in size, strength, etc. The purpose of the competition is to find the best in the world, and gear prevents at the competition that if some teams have items that give them a huge advantage over others.
