Feeling as though he's already beaten Manny Pacquiao twice but been slighted by the ringside judges in their 2004 draw and Pacquiao's 2008 split decision win, Juan Manuel Marquez isn't planning to leave things in the hands of the scorers:
"When we fought, I landed more power shots, but the judges didn't see it that way. To avoid all of this, it is necessary to knock him out and we will be fighting to do that. It's going to be difficult [to stop him] but not impossible."
Marquez (53-5-1, 39 KO) tuned up in a bit of a farce on July 16 against Likar Ramos, but apart from that 1:14 of non-action, he's been out of the ring since November 27, and he fights Pacquiao on November 12. The good thing from the Ramos "fight" was he got a training camp in to sharpen up, and while few expect Marquez to even be particularly competitive (let alone win), I don't think anyone expects him to give less than his very best effort, and I think it's reasonable to expect action and fireworks, even if it goes one way.
As for the bout's 144-pound catchweight, Marquez says that the experience moving up in 2009 to fight Floyd Mayweather Jr wasn't a deterrent, but rather it helped him. I guess you could assume he now knows how not to put on the extra weight, so there's that.