Top 5 QB's Drafted Stats since 1970

[ChiefsCountry]

1970
1. Terry Bradshaw

1971
1. Jim Plunkett
2. Archie Manning
3. Dan Pastroni

1973
2. Bert Jones

1975
1. Steve Bartkowski

1979
3. Jack Thompson

1982
4. Art Schlichter
5. Jim McMahon

1983
1. John Elway

1986
3. Jim Everett

1987
1. Vinny Testaverde

1989
1. Troy Aikman

1990
1. Jeff George

1993
1. Drew Bledsoe
2. Rick Mirer

1994
3. Heath Shuler

1995
3. Steve McNair
5. Kerry Collins

1998
1. Peyton Manning
2. Ryan Leaf

1999
1. Tim Couch
2. Donovan McNabb
3. Akill Smith

2001
1. Michael Vick

2002
1. David Carr
3. Joey Harrington

2003
1. Carson Palmer

2004
1. Eli Manning
4. Phillip Rivers

2005
1. Alex Smith

2006
3. Vince Young

2007
1. JaMarcus Russell

2008
3. Matt Ryan

Out of this group:
21 have made the Pro Bowl
12 have took teams to the Super Bowl
7 have won the Super Bowl
4 are Hall of Famers right now (Manning is for sure someothers have a good shot ie McNair, McNabb, Eli)
10 are pure busts
4 of the busts came in two drafts (1999, 2002)
1 Jeff George - no Pro Bowls but he wasnt a bust really, he played good with other teams, so he is in his own category

(Vince Young, JaMarcus Russell and Matt Ryan jury is still out - Young did have a Pro Bowl though)
Jim Plunkett never made a Pro Bowl but won two Super Bowls.

Just going off history you have close to a 70% you are going to get a Pro Bowl Quarterback with a top 5 pick. You have about the same percentage for a bust as Marty does for playoff wins.