Russel Wilson is a 'rich mans version' of Doug Flutie. He should have a nice career until mobility becomes an issue.
Andrew Luck has more upside, but I see him putting up Brett Favre type numbers - lots of TDs and yards, but will throw more INTs than the average starting QB throughout his career.
RGIII - bad feeling he could sustain a major injury that plagues him throughout his career. By far the most exciting player in the league.
Weeden - might get another year or two as a starter; teams will have confidence in him as a backup
Tannehill - toughest QB to get a read on; like the upside, but will take longer to develop