I'm wondering if the picks by the Jaguars and Titans showed a fear of the Watts/Clowney combination. The Jaguars picked the biggest of the 3 leading QBs in Blake Bortles. Perhaps they were afraid that Manziel or Bridgewater, with their slighter frames, would not be suitable for facing the Houston D twice a year.
Then the Titans picked an Offensive Lineman in Taylor Lewan, who has already been matched up with Clowney in a College Bowl. Their current QB (Jake Locker) seems to be injury-prone, so you can see that they are trying to protect him as much as possible.