"But what I know is this..a pilot who is good at flying a C-172, will be good at flying an F-15 and also good at handling a B777..and without wanting to offend anyone, this modern minimum requirement of 500 hours multi-crew, is completely wrong and insane."
Supersonic you seem like a smart fella. But the one thing to understand is that it is a much cheaper and faster from training point of view to take guys with that 500h multi-pilot hours minimum. It's nothing about who is capable and who is not, it's just about supply/demand and saving time and money
-J