Having watched both clips, I was fairly impressed with Dunlap. Yes, he does play a bit high, particularly out of a 3 point stance, but that is because of his height. It's not as pronounced when he's standing up, and wouldn't be as much of a factor as a 3-4 OLB. He reminds me a lot of Julius Peppers the way he never seems to be running at full speed but always seems to get to where he needs to be.
What I'm most impressed with with Dunlap is that he's always around the ball and the ballcarrier. There are several plays on those 2 clips where he changes direction and pursues the ballcarrier well away from his initial assignment. At around 1:20 in the Florida State excerpt, for example, FSU throws a screen pass and Dunlap ends up way downfield close to the ball carrier when he is tackled. No, he didn't make the play, but he didn't give up on it either, which a lot of pass rushers would have done.
I watched the entire Sugar Bowl game focusing on Dunlap on every play, and I came away extremely impressed with his consistent effort, his ability to pursue, and his agility.
Sorry, but when I watch Dunlap I still see flashes reminiscent of this:
YouTube - Willie McGinest Tribute - NFL Linebacker