I thought the Barrios fight was closely contested but had Guzman winning by 2 or 3 rounds at least.

As for Guzman/ Marquez there is huge potential for this fight IMO. If Pacquiao decides to compete solely at 135 & relinquishes the Ring championship which is more than likely since he was starting to have trouble making the 130 pound limit; then a Guzman/ Marquez clash would be for the vacant championship. Pitting the #1 & #2 guys in the division against each other. It doesn't get much better than that