Just read this on a ESPN article. Doom is obviously overpaid.
"Defensive end: Elvis Dumervil
Cap difference: minus-$14m
Yes, we're telling you that Dumervil and the 12 times he got to the quarterback for a sack are overrated by that much. With a monstrous $15.6 million cap hit, this has to go down as one of the deals the Broncos got wrong years ago; they did not do a good job of judging the impact Dumervil has on the majority of his snaps. Sure, he had the 14th-highest pass rushing productivity score of all defensive ends, but eight costly penalties and some terrible run defense (his 4.8 run stop percentage was the 13th-lowest of all defensive ends) shows a player who has made a reputation on his highlight reel and not the body of his work."