Mostly agree with your rankings; with the optimism bias from being a cardinals fan personally, I'd argue you could make a 1 star increase at each position, but their current rankings are also fair. I very much disagree with the 1 star ranking at special teams however, as we have a pro bowl gunner in Justin Bethel being joined by some high upside athletes in the kick coverage team and kick return game. Probably the best coverage unit in the game, which coupled with a punter who is below average (don't think he's as bad as stats show- his hangtime is rediculous, and it seems the staff went with him for this reason. I'd choose a distance leg with our coverage team, butI digress). In short, I'd say 3 stars is fair. A perfectly average special teams unit, whose only limitation really seems to be Drew Butler's distance and the uncertainty of a new long snapper (but both seem pretty reliable this far)
Effective on corner/nickel blitz (3 sacks, 3 hurries in 2009)
Played a lot of press man coverage
Intense football player
Wonderful skill set
Still has some upside
Lacks some awareness and instincts
Could anticipate routes better
Sometimes loses focus
Vulnerable to inside moves
Some question listed height
Unimpressive in zone
Summary: Joe Haden is a very talented cornerback with a very well-rounded game, but some teams might be scared off by his lacking instincts, which is critical at the NFL level where pro receivers are great route runners. Haden's level of production and consistency will get him drafted in the top 15 picks. He is one of the better cornerback prospects in the last couple years. He shut down Alabama receiver Julio Jones in the 2009 SEC Championship.
Player Comparison: Leon Hall. Similar size, speed and skill set. Hall is also a great player against the run.