I'm putting up the tape so people can see the good, the bad, and the ugly.
What's important here is to look for traits, not just plays, but also how he handles various roles and responsibilities. For example, I see what Brave is talking about. One play early on, Williams pulled and was blocking Walker to the ground. He kind of dives sideways and manages to trip up the rb. Most of the time in the NFL, this is just the OLB getting pancaked. There's also a few times he gets blocked out of the play. On at least one occasion he's blocked 5 yards off the LOS. On a goal line play...it looks like a TE stymies him and they score running right next to where he is.
On the pass rush side, he doesn't seem to have a rush plan and just sees what happens. He'll need to develop this more because he's not a super dynamic athlete. He'll need to learn to use his length to bull and convert speed to power and improve his hand usage.
On the good side, he's an active player. He gets some pressure looping around the outside or catching an OL off balance and quickly countering inside. He seems to have the desire to make the tackle. Versatility is a good thing, but sometimes also slows down a prospects development. For example, sometimes he makes run fit mistakes. In the LSU game, he took on a pulling OG as the ouside force defender and took on the OG's inside should (opening up the outside). Fortunately his teammates cleaned it up but that will be giving up a huge play in the NFL.
I see some good things and some not so great things. But he's a good athlete, has decent production, has length you can't coach (especially for his size) and he seems like a leader on the D. He's also a standout st guy.
If he can be a standout special teams guy, he could be active on game days if he's that much of a difference. But most likely, his long term success will be at OLB if he can learn some more techniques, string them together in a pass rush plan. In the meantime, he's a pretty good blitzer and could find more early success rushing the passer this way (as a blitzing) LOL!
http://www.espn.com/blog/statsinfo/...-calculated-we-explain-our-quarterback-rating