Even if the current amateur system is flawed it surely can't be detrimental to pro fighters?

How many "great" pros had no amateur success? I am not sure about this, but would be shocked if there were many great fighters with limited amateur experience. I Know about guys like Moore and Chavez with next to nothing amateur careers. But they ended up with a million pro fights.

Having a quick look at todays P4P top ten, only Pongsaklek Wonjongkam has no amateur record (i can find), but has reached 82 pro bouts. Everyone else was a successful amateur. Even guys like Pac and Marquez that turned pro as teenagers.

So.. amateur experience surely plays a major role in the progress of pro fighters? Still even today...