up until recently he's been high risk low reward, presumably their managers / promoters have done a grand job keeping them away form him, he should've fought a prime naz aswel IMO. Given the opportunity I think he could (would) be top 3 p4p.
Generally I don't think people care much about Marquez and his dull repetitive style, it doesn't help that his brother fights with much more intesity and explosiveness.
Turning down a bumper payday rematch with Pacquiao didn't improve JMM's cause either. How much does he want to be in big fights?