MO...If you have secondary that can play man D and shut down receivers it makes any avg D-Line look a whole lot better.
Sticking to the originial question of Mo or TM7. Id say for a college team Id slightly pick TM7. Simply because he is a better tackler and playmaker. Although Mo makes a lot of big plays and is a better cover guy. TM7 just makes so many plays though from multiple positions. Its very close. When it comes to NFL Id go Mo all day. He is much bigger and physiclally suited for the NFL. He has the tools to be a Pro Bowl CB. I think TM7 will do a good job in the NFL despite his stature.
Hard to argue with Mo or Sam but I may have to go with Anthony Johnson. This guy could be a top 10 draft pick at DT. Unlimited potential.