Wow, you're really passionate about this. Weird.
Williams won the Heisman because he was a known guy before the season started, he threw for 4,000 yards, ran for 10 TDs, and had lots of great, athletic plays.
People aren't savvy when it comes to these things. They care less about how good a defense he faces and more about the overall team he's playing against. Yes, that's limited. Beating the #10 team with a shitty D impresses people more than beating the 25th-ranked team with a top 10 D.
Plus no one else MADE voters pick them. Corum got hurt. Hooker got hurt.
I don't understand the hate for Williams. He's as good a pick as any.