They ALL did 225lbs. They didn't choose what they were going to do, and like was said, I doubt any of them even knew they would be doing this before they got there. Nasser El Sonbatty went first and only did like 10-15 reps. I have no doubt he can do more but he did all of his SUPERSLOW.
Obviously this wasn't a real contest. They were all wearing the clothes they wore to the event.
Bottom line, this guy is strong as hell and most of the people criticizing because of form couldn't do half of the number he did even if they did them the same as he did. Not locking out doesn't mean you work LESS hard. Locking out is a rest position. That means doing them like he did actually puts MORE stress on the pectorals.