The difference lies in that PBF has been protected throughout his career. PBF it seems is able to adapt to his opponents quickly; however, he did struggle to adapt to Castillo's power and pressure in the second fight they had considering in that fight PBF looked horrible he had no answer for Castillo's pressure. This is of note in that it shows that PBF can not handle a pressure fighter. It is of no wonder why he never was willing to fight Margarito or Cotto. Marquez on the other hand has no problem with dealing with anything thrown in his path. I believe Marquez at this point of his career is the most adaptable fighter in the world. Floyd has tangible advantages over Marquez: size and speed; conversely, Marquez can change constantly throughout the fight and Marquez body is not injury prone. Floyd has both hurt his shoulder and broken his hand in matches. Furthermore, Marquez has the better corner as PBF's corner is divided on strategy. Below is a recent pic of JMM
