Re: Do you consider Juan Manuel Marquez to be an ATG
Marquez has generally faced opponents throughout his career more stylistically challenging than Morales ever did and perhaps even than Barrera did at times. It's always been stated by his detractors (and his admirers) that good movers and counterpunchers who don't take the lead stand a good chance of beating him. Even if you don't rank Marquez as a true ATG - a fair enough stance - it's negligent to forget the convincing jobs that he did on on the Polo's, Medina's and Salido's, the likes of whom should have been hard matchups on paper and were types who no-one else wanted to fight for one reason or another.
Barrera has his recovery from heavy defeats and the great win over Hamed to perhaps distinguish himself slightly, even though Hamed was made for him in many ways. Otherwise, the records of himself, Morales and Marquez are close to even as far I can tell. Doing as well as Marquez did against Pac (I thought he won both times) is arguably as good as beating Morales two out of three or taking one from a trilogy with Pacquiao himself before losing heavily in the subsequent rematches.
It might also be worth saying I reckon that a prime Barrera might have edged a prime Marquez whereas a prime Morales could well have been outboxed.