Oh, and that is a great lift, spotter or no. I would guess he can touch and go 550 lbs or so, and that is VERY good.
In terms of what people can do, some huge guy was at the MHP booth at this year's Arnold. He was doing the bench your weight for reps deal. He was lean and weighed in the 270 range. He benched 275 lbs for 50 controlled reps and stopped not because he had to, but because he chose to. Jeremy Hoornstra (one of the strongest raw benchers in the world) was spotting and I could tell he was very impressed as he looked over to Joe Mazza (to my recollection) and just kind of smiled and shook his head.
Long story short, there are some very strong mofos out there.