He will get run over in the run game. He's even smaller than Dwight Freeney who is horrible at anything other than rushing the passer. Set the edge. Fuggedaboutit!
Freeney is not even 6'1". But that's not nearly as important as the fact that he is not asked to set the edge. In their defense, they're pass rushing almost 100% of the time. So that's a really crappy example. Setting the edge is not just about weight. It's about height, arm length, technique, weight, strength, and agility. Assuming he'll be able to learn the technique, he passes on everything except weight.
No, no he does not check out. Not even close. 6'2.5 inches tall and 237 lbs. Are his official senior bowl measurements. BB is looking for 6'4" or taller, 250 lbs or heavier. That's a huge difference in measurements. At the combine, Matthews measured out at 6'3 240 lbs and BB passed on him what 2 or 3 times. And Matthews is a measureably bigger player than Von Miller.
Where do you come up with those number. Here's a link to one of my posts form last year with a source who claims "clean" measurables are 6026 and 245 lbs. So he's only 1/8th of an inch shorter (with long arms that make up for it) and 8 lbs light.
http://www.patsfans.com/new-england...-olb-measurables-draft-page5.html#post1783354
With regard to Mathews, I suspect the #1 issue on him wasn't his size, but the lack of game film on him, as he was not even a starter for 1 full year at USC.