Marvin Eder Bench Press vs Parallel Bar Dip

At 515 pounds, the Marvin Eder bench press is impressive, but his dip figures are staggering! Two questions:

1. How did Marvin Eder dip 434 pounds? and


2. Should I ditch the bench press in favor of the dip? I suppose what I'm asking is, which exercise is better?

~ Pete