I think Derick Burgess is good, but he's not a top 5 pass rusher. He had a good year the year before last when he had 16 sacks, but last year wasn't all that great with 11. Don't get me wrong, 11 is a lot of sacks, but it's nothing spectacular. You also have to take QB hurries into acount, that counts even if they are not included in stats.. Hurrying the QB makes a huge difference in the outcome of a pass play.
Plus I can name more than a handful of pass rushers whom I feel are better than Burgess..