So he might be a two-time steroid user/cheater and everything, but he's beaten all of the following:
Semmy Schilt twice
Nogueira
Alexander Emelienenko
Mark Hunt
Pedro Rizzo
Jeff Monson
and only less than a year ago in his last fight he knocked out your current #1 contender in the UFC
Dos Santos
But seriously, the guy has been crushing cans for a while and Brett Rogers didn't exactly lose his last fight to cans, so I really think the line is off on this...
should be closer to -250 in my opinion
but +300 has a lot of value. Remember the odds were the exact same when rogers fought Arlovski, and that fight lasted about 12 seconds
Semmy Schilt twice
Nogueira
Alexander Emelienenko
Mark Hunt
Pedro Rizzo
Jeff Monson
and only less than a year ago in his last fight he knocked out your current #1 contender in the UFC
Dos Santos

But seriously, the guy has been crushing cans for a while and Brett Rogers didn't exactly lose his last fight to cans, so I really think the line is off on this...
should be closer to -250 in my opinion
