Great video interview here:

http://mvads.cdn.espn.com/now/stitched/mp4/4d993388-8b49-4f34-9e48-87906e690281/00000000-0000-0000-0000-000000000000/3a41c6e4-93a3-4108-8995-64ffca7b9106/b94fbc07-0e84-4381-872a-386777c00853/0/0/219/84991161/content.mp4

What made Manziel Heisman-worthy?

 The best player on the best team, i.e. a team that is undefeated, is not eligible for post-season play: Braxton Miller.

The best player on the other best team, i.e. a team that is undefeated, plays defense. 

The other, "most exciting" players (which is what the award truly is) that may have been in contention e.g. Marqise Lee, were on teams with mediocre records (7-5).

If Marqise Lee played for a Pete Carroll-coached team, he'd be 12-0, playing in the national championship, and taking home the heisman. 

He's most certainly been not only the most exciting player in the country, but the best; Johnny Football beat Alabama, which makes him the Eli Manning of college football; whilst Bama still gets a shot at the championship (and is now favored to win,still, ironically) Johnny Football is basically the only viable candidate left.

If Notre Dame's QB didn't suck, he'd win.

If Ohio State was bowl eligible, their QB would win.

IF USC didn't have a terrible season (for their standards and as a pre-season #1), Lee would win.

If K State didn't lose, Klein would win.

If Oregon didn't lose, Barner would win.

I love Johnny Football, but he's not the best player in College football. He's simply more viable than the other candidates (defensive player, QB on non-undefeated team, QB on non-bowl eligible team, and wide receiver on 7-5 team that finished unranked after starting as #1).

Perfect storm, basically. Just look at the candidates: http://espn.go.com/college-football/heisman12/ one of the weakest fields in recent memory.

 This is what a real heisman winner looks like: