Deadlift bars are known for their bend. No one uses stiff bars in deadlift contests.
Gotta love GetBig, demanding more from a 500K deadlifter, LOL
What makes John Haack's lifts so incredible - aside from his absolutely insane pound-for-pound and absolute strength - is the fact that he does he deadlift in conventional form, and his squats are not a super low-bar squat that he good morning's back up. He has a really thigh-heavy squat, and it's even more impressive because of that, IMO. And to have a super heavy [600-lb] bench press without super short arms...it's just incredibly impressive to see Haack lift, to me.
Of course Jamal Browner is amazing too, but he just fails to meet Getbig's standards on the matter.