This isn't right. Deion for a first as a good trade or bad trade has nothing to do with what the pick does.
Either Deion is worth a number one PICK or he isn't. Making it dependant on how the pick does and you are judging not on Deion but on the abilities of the man making the pick, and on the abilities of another player, the guy who was picked.
Would you give a first round pick to the Jets for Hank Poteat? What if you did and the guy the Jets picked was more worthless than Chris Canty? We would have the better of the deal (Hank would be better than cutting a first round pick and swallowing the cap hit), so would you say that giving a first round pick for Hank was a good trade? Of course not. It has nothing to do with whether the pick was a bust. Well, neither can you take what we get for Deion into consideration when deciding if losing him was worth getting a first round pick.
Not that any of this matters with the talking heads on TV, or the clicking keyboards on the internet. Logic will go out the window, and the smartness/dumbness of the trade will be forever linked to how Deion does in Seattle (meaningless, it is how he did for us that matters) and how the guy we got for Deion does (even more meaningless).