Here are some more metrics evaluations from another site, this time on explosiveness ratings for defensive ends and rush linebackers, and also some input on defensive tackles. The guy who does them is a Patriots fan. He puts out his list every year before the draft. Khalil Mack, Kareem Martin, Ben Gardner and Ra'shede Hageman receive the highest grades this year. Last season Jamie Collins had the highest rating.
Here is the 2013 version. Dion Jordan did not fare very well. I'll paste his summary below the link:
Dion Jordan, OLB, MEI 70.23 – The reach. Jordan isn't a bad player, he just shouldn't be in consideration for a top five pick. He's tall but skinny, athletic but inert. His mediocre vertical of 32.5 inches likely portends a critical lack of explosiveness that will limit him as an edge rusher, given his wiry frame. Some guys can get away with less burst to their game by using length, power and leverage, but Jordan only possesses one of those traits. He'll probably have to stand up and work as a linebacker exclusively, as it's hard to see him enduring the wear and tear of working as a down lineman in the trenches regularly. He is still relatively young and has only played on the defensive side of the ball for three seasons, so there's a chance he grows into his body and puts it all together. But given his lack of production and rapid ascent in draft circles, I wouldn't want to be the one to take that chance with a premium pick.