Who has defeated better competition? Silva or GSP?

Pretty self explanatory. Both considered P4P best in what many could say have been the weakest divisions in MMA.. so who has beat the better competition?

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I picked GSP because Andy really doesn't have to contend with dominant wrestlers like GSP. Wrestling has proven time and again to be the most successful discipline and good wrestlers are a dime a dozen at WW. GSP has beat them as well as some great strikers.

What he said^^^^ GSP has taken on fighters with drastically different styles and come out on top. Not to say that Silva hasn't but GSP's resume is overall more impressive (in terms of names.)

GSP

Jake Shields

Josh Koscheck

Dan Hardy

Thiago Alves

B.J. Penn

Jon Fitch

Dancin' Andy:

Vitor Belfort

Chael Sonnen

Demian Maia

Thales Leites

Patrick Cote

Dan Henderson

Rich Franklin

Nate Marquardt

Travis Lutter

GSP has fought the much better competition.

GSP has fought better competition, but Silva has dominated (see finished) his, which could be either attributed to the competition or the champs themselves. I see the case for both.

You could say WW is one of the weakest divisions and you would be wrong.

The answer is GSP, no contest.