I think Pacquiao might stop him in the mid-late rounds. I doubt weight will be an issue really, I just think Pacquiao will want to make a statement after the Mosley borefest and I fear JMM no longer has the reflexes to punish Pacquiao as effectively as he did in the first 2 when he opens up.
marquez has always been my fighter out of the fab 4 so i have to go for him but he has a tough ask especially at 39. the reports suggests a catchweight of 143 but thats about the weight marquez came into the fight against mayweather with and he just wasn't quick enough. i would like him to come in at 137-139 and keep his speed and add a little more leg strength. if his camp goes well and the extra weight doesn't hamper him enough, then style wise theres no reason why he couldn't give pac yet another boxing lesson and hopefully the judges watch the fight this time and get the right result. i know this would kill the mayweather vs pacquiao fight, and although i'm a fan of them both marquez beating pacquiao would bring more happiness than any other fight because of the pain seeing him get robbed twice. its one of the worst feelings you can have as a fan when you know your fighter won the fight clearly yet he isn't given the decision, a marquez win would make up for all that pain.
Cotto only went into survival mode once he had to survive , rounds 1 - 4 Cotto was going toe to toe with Pacquiao until he realised he was being outclassed and out gunned . Mosley is another story :huh I honestly cannot remember Marquez being in serious trouble against Diaz and by and large outclassed Katsidis as well as forcing a stoppage . This fight depends on what Marquez has got left in the tank , and how he handle's the weight , he's going into the fight as the underdog based on the Mayweather fight and based on Manny walking through the worlds best WW's one after the other , after 1 fight above 135 !!! I think people are going to get a shock here , i fancy Pacquiao by TKO but im certain Marquez is going to present him with more problems than any of his last 5 opponents , and would not at all be suprised if Marquez see's out the final bell
Head says Pac stops Marquez in the late rounds, heart says Marquez UD. (Marquez is my fav fighter) I'd be ****in chuffed to rocks if Marquez won, i know it would kill the Mayweather fight but it would serve PBF and Pac right for ****ing around for so long!