You said the Petersons had little amateur experience, that's where you were wrong. To say that most of those guys had little amateur experience is being naiive. The Olympics isn't the end all, the Petersons had just as much international competition as anyone on the Olympic team. The other guys had a bunch of competition at the national level too. Maybe not Cloud (I don't know) or Williams but I'm pretty sure all those other guys have plenty of amateur experience unless not going to the Olympics or having 200 fights means you have "little amateur experience."