I always found it funny that people think that some misguided propaganda on an online forum will influence the PPV buys. Remember the Margarito boycott?
I expect the fight to do well. There is a enough footage of JMM looking silly in the first two fights to convince enough people that Marquez has a shot even if he really doesn't this time. If Ortiz was able to convince people he had a chance against mayweather in the 24/7 fight, it will be easier for JMM to convince them he has a chance. I expect about 1.2 or 1.3 mill when it's all said and done.