Since Gamboa is the clear true champ @ 126 with the annihilation of the boricua thanks to Salido and Gamboa beating Salido. How will a prime Gamboa do against the prime versions of 126-130lbs of Pac-Morales-Barrera-Marquez? Be honest and don't be a nuthugging Cuban.
I think the fab 4 are too good for Gamboa. The biggest advantage over Gamboa is the fact that their defense is more than just speed/movement. Marquez would probably get KDed 2 or three times in the first round and end up knocking out Gamboa in the 8th.
All four beat Gamboa. You need excellent defense to beat one of those greats. Gamboa doesn't have it.