Suh has never been and will never be in the conversation for league MVP. Watt is by far the better player. He's miles ahead of anyone. Suh might be one in a decade. Watt is one in a century. If Watt had hit FA the entire league would be going crazy.
Do yourself a favor and watch both of them play. They are both equally as dominant at their respective positions on the field. Suh plays a position that will not lend itself to being "sexy" enough to be in the conversation for an MVP.
A defensive tackle hasn't won the defensive MVP award in 15 years. The game has changed to passing the ball and guys who "sack the QB" from the outside get more exposure than guys who are inside, dealing with consistent double teams and collapsing the middle.
Like I've said, yea, JJ Watt is dominant, best defensive player in the league . . . but throwing statistical figures in a comparison study does very little to distinguish the 2.