Basically JT in his prime, was an awesome talent, and was unstoppable to the point you needed to have two guys block him. Zach in his prime was all over the field, and hit like Rhino going 40mph. Both were relentless in practice as well as in games. Both continually restructured thier contract, to help the team rather then seeking to go to another team. Three things made one of them better then the other though.
1. While Jason made some of the players on the D-line better with getting blocked but multi-players, Zach Made the entire defense better, with being able to see what was going on , and position everyone in the right position to succeed...especially himself.
2. In practice Jason was not a good teacher, but Zach helped quite a few LBers play better then they normally would have, if not for learning from Zach...including Crowder.
3. Each at the end of their careers were asked to join a Dolphin rival team. JT joined a Jets team, he always said he hated more then any team in football. Zach told everyone, that in his many years as a Dolphin, he learned to hate the Patriots, there was never a chance in he** that he would ever join the Patriots. Integrity over possible championship....that's what makes great players legendary.