He is overrated to be honest. If anyone has a subscription to pro football focus they could tell us. That being said, he is an upgrade over Kruger, albeit slightly. He's a tad bit better run defense wise, but he too can be neutralized by a very sound blocker or a double team. He really benefited playing with Von Miller last year as he took most of the attention away. Not sure how he will hold up as an OLB though I know he played the position before with Don Martindale as the Defensive coordinator. Really it depends on who has been rating him. He has a lot of hype coming over here though like he is some savior for the defense. He will likely register close to 10 sacks and will be much more efficient and a better player when we need him because Upshaw will take snaps on run situations. With him being used like Kruger he will have a monster season and playoffs, but still only get around 10 sacks while pressuring the QB often in passing situations. What he gives that we didn't get from Kruger is leadership and veteran savvy. He could be the best mentor for Upshaw and that would be great for us going forward.
What about in 2006 when he was drafted by the Broncos, he had 8.5 sacks as a rookie when Ebenezer Ekuban had 7 sacks at RE with Kenard Lang generating 6 sacks at LE? The next year in 2007 as a sophomore he put up 12.5 sacks as a RE (facing the blindside blocker). The guy with the next highest sacks was Tim Crowder with 4. John Engelberger played across from Elvis and only got 1 sack.
In 2008 he had a bad year, where he only had 5 sacks as a RE across from LE Ebenezer Ekuban who had 5 as well. The 2009 Broncos had Elvis Dumervil amass 17 sacks as a ROLB with 3 passes defended and 4 forced fumbles. That's insane. That was also the first year he played OLB as well.
2010 he missed the season. The Broncos had 23 sacks on the year but most of the sacks came from the ILB DJ Williams & Mario Haggan with 5.5 & 5 respectively. That's extremely disappointing.
2011 we saw the emergence of Von Miller who had 11.5 sacks as a LB with Elvis Dumervil as a RE on the 4-man front. Elvis still got 9.5 sacks that year, which isn't bad at all.
So my point is while you can say Dumervil benefited from Miller in 2012 because Miller had a ridiculous 18.5 sacks while Elvis had 11, I think Elvis has proven himself as a very good pass rusher before Miller came into the league.