Both great fighters and champions. You can argue that the Pac trilogy puts Marquez ahead. But in terms of sheer memorable moments...MAB's trilogy against Morales and his win against Hamed put him ahead for me. To this day i have never seen a trilogy filled with more sheer action, skill, and utter disdain for each other than the MAB vs. Morales fights. His win against Hamed IN the UK was also pretty iconic. I think it terms of pure talent, Morales was actually the best of the 3 great Mexican champions. But he too often let his machismo make him fight emotionally and disregard ring tactics. Also, the MAB vs Marquez fight was one of the most underrated fights i can recall. Too bad we never saw a prime Morales vs. Marquez.