John Clayton, and others who study these things, have the exact opposite opinion - 2011 may be the last "Big Pay Day" for NFL Rookies in the draft. A new CBA, and/or Rookie Pay scale may not kick-in until the 2012 season. Thus, it would make much more sense, financially, to come out and declare for the draft in 2011. This may be the last chance for a rookie to earn $10million/yr - $60+million contract, for quite some time. With the next CBA, and/or Rookie Pay scale, for eg., even the top draft picks may only earn $3million/year for 5 yrs. ($15million vs $60million + 1/3 to 1/2 of that guaranteed- easy decision).
Let's hope Clayton is right and Gaughn is wrong - at least in terms of Luck (or any of the top prospects for that matter) declaring for the draft.
Also, look how recent QBs stock has fallen, when they waited a year to come out for the draft - with Bradford being the exception. Matt Leinart, Tim Tebow, and Jake Locker, to name a few, were all considered to be candidates for 1st overall before they decided to return to school. Even Brian Brohm would have been better off had he come out a year earlier, in terms of dollars and cents.