Going back to Judah-Tszyu...

Judah did land a monster left hand about a minute into the fight that knocked Tszyu halfway across the ring and seemed to stun him.
But Tszyu did do a much better job in the 2nd round. Judah got careless and was holding his hands down by his waist, and was moving straight back while standing towards Tszyu's right, which left him wide open for the KO shot.

I thought it was a legit stoppage. Judah looked like he was badly hurt when he got up and fell back down. Once the fight was stopped, Judah did seem to recover pretty quickly, but Nady was right to stop it.
I can completely understand that Judah was upset, obviously he had been waiting for that title shot. I could understand him complaining about it, but the stool throw and the glove to Nady's face was a little over the top.