Bullshit. You're saying he did 200 reps with 405, all within a matter of 6 or so hours? No matter how conditioned your legs are, NOBODY could handle that for ten sets of ten, without experiencing serious muscle fatigue afterward, such that you couldn't even dream of repeating it all a few hours later.
You don't have to believe it.
It's not like I go around making claims on anything. I've trained with a lot of very strong people.
The guy I'm talking about is a good friend of mine since we were kids. We grew up playing sports together. We trained through high school and college together.
No one was as dedicated to training and conditioning as he was.
He's had a rough go. He's had 3 major back surgeries, with the last one lasting 12 hours. He has 4 disks fused now, I believe.
I really enjoy training, and enjoy pushing myself. The only person I've trained with that I could never beat was him.