Last season, Josh Wilson was one of the best corners in the league according to Football Outsiders. That, along with how hampered we were this offseason (as Jumbo has mentioned and as has been mentioned about a billion times) is enough for me to assume his play isn't a regression, but more of a side effect of an overall weakened secondary. When teams pass as much as teams do against us because they can it's just going to make you look bad at times. We need to remind ourselves of Sean Taylor's play in 2006. Great players can have bad seasons, to little fault of their own. Football is too much a team sport.
Furthermore, Dez has been embarrassing opposing DBs the last few weeks. He's clearly on a roll. Josh Wilson was brought in to be our no. 2 CB, but he's essentially on the no. 1 WR of opposing teams every play because of that cap penalty.