Originally Posted by Hook!
Because he thinks that Pac might be cheating
True. But that's secondary or just an effect of his fear. Why else is he asking for the tests if he doesn't fear for his well being? When you consider how people think highly of him, of his skills and abilities he will be the favorite if they fight, why the hell would he asks for the tests? Think about it.
I'm not saying he shouldn't ask for them. It's his right. But you cannot escape the reason why he is asking for it. His father says it best.