Yes I do think it was a bad pick. What has he done for the Vikings?
You can't be serious? Just because they haven't been to a superbowl .. lots of players have extremely successful careers and are a massive part of any success their teams has without ever winning a superbowl. Dan Marino never won Miami a superbowl, does that mean you'd ask what he ever did for the fins?
In 5 seasons, Peterson has rushed well over a thousand yards in all of them but the one just gone (he would have gone over if he didn't go down injured) and has gained a total of 6,752 yards. Has scored 64 rushing touchdowns.
67 touchdowns including 3 receiving in 5 seasons. Has an average of almost 100 yards a game. Minnesota has won the NFC North twice in his five seasons, A.D. was an integral part of their offense both times.
and then there are all the records he has broken ...
NFL awards
2007 AP NFL Offensive Rookie of the Year
2007 Diet Pepsi NFL Rookie of the Year
2007 Second-Team All-Pro
2007 Pro Bowl MVP
2007 Pro Bowl
2008 Pro Bowl
2008 Best Breakthrough Athlete ESPY Award
2008 Rushing Title (1760 yards)
2008 First-Team All-Pro
2008 FedEx Ground Player of the Year.
2009 Pro Bowl
2009 First-Team All-Pro
2010 Pro Bowl
2010 Second-Team All-Pro
NFL records
Most 200-yard rushing games for a rookie (2)Most yards rushing in the first eight games (1,036)
Most yards rushing in a single game (296)
Second rookie ever to win Pro Bowl MVP
Pro Bowl record in career rushing touchdowns (4)