Wow...this fight equals a mismatch of epic proportions.
I think Broner, as much as I dislike the dude would beat the brakes off of Gamboa. Gamboa last fought at 126, has been inactive and has always been a bit chinny, against less than quality opponents.
While he's faster than Broner, it isn't by much and I don't see a huge gap in talent either. I think Gamboa is only slightly more talented, but barely. Frankly, Broner's size and reach advantage, coupled with his talent should be more than enough for a guy moving up two or more divisions. Manny Pacquiao, Gamboa is not. They both have fought cupcakes mostly, and Broner and Gamboa have about equal in quality win(s) (DeMarco and Siri). This supposed shut-out just makes no sense. Guys, please stop, you're killing me