Sorry, but this doesn't tell the whole story. You have a better chance of making big money as a WR in the NFL if you are big. Calvin Johnson, Andre Johnson, Brandon Marshall, Sidney Rice, Anquan Boldin, Larry Fitzgerald, and even Robert Meachem are all 6'3" or taller and/or big WR's. The only guys that are close to Truitt's size are Santonio Holmes, Desean Jackson, Pierre Garcon, Reggie Wayne, and Roddy White. Holmes has not been worth his pay, Jackson has been inconsistent and also makes money as a returner, and White is bigger than Truitt.
Then, there are guys like Dez Bryant, Dwyane Bowe, AJ Green, Demaryius Thomas, Marques Colston, and Vincent Jackson who are all 6'2" or taller.
It looks like if you are Truitt's size, then you have a better chance at making better money as a CB. Doesn't mean that he can't, but the odds are better as a CB. JMO.