I've seen much better. He has quick feet; that's not the same thing as being a great defensive fighter.
He got caught coming in. It happens. That doesn't mean Pac isn't better than those guys statistically. None of those guys fought the amount of elite fighters Pac has and still maintain a low connect percentage by his opponents. You can argue that Mchunu get hit less, but against who? Pac would never get touched the way Broner got touched by Maidana. Knockout or not, he gets hit less than all the guys you mentioned.
Over committing lead Pac to dine on canvas, not bad footwork; that and JMM timing him. Pac's footwork is among the best in the sport. Tim made the mistake in both fights of trying to match it, and in both fights injured himself. You don't try to match Pac's footwork and hand speed. Those are his game, and he's nearly second to none at them. You TIME Pac to beat him. That's how Mayweather would beat him all day long.
Where is the picture of Lewis on the canvas when Rahman knocked him out. I didn't not hear anything about that. Pac will fight the winner of the Marquez/Alvarado fight, Pac will knock Marquez out.............