I was just rattling off D players OTTOMH, illustrating that there are likely 4 players better than the two of them. I'm sure if I gave it thought and research I could come up with 10 or more you could argue are better.
Point is a D player's value is subjective as his worth is determined by how he fits into the D.
e.g. Freeney is not worth as much to the Pats D as Wilfork, and vice versa.
In Colts D, DF & BS are most likely "top 5" guys in the league; however, if you were to start a new team, I think objectively there are at least 4 guys a GM would pick before those two.
Ahh, at least someone realizes that Wilfork is the best and most important player on your D!
And I don't think you could find more players than that. Sure, there are some great run stuffers like Wilfork, Jamal Williams, Haynesworth, the Williams in Minnesota, etc; but they aren't going to help teams beat the Pats because the Pats just throw every down against those teams. When I'm playing the Pats, I want Freeney and Mathis on my side much more than Kevin and Pat Williams. Considering the Pats are the team to beat in the NFL right now, that's how I decide whos most valuable or the best. And I'd say the same playing against the Cowboys or Packers, because those are passing teams as well.