Jake Kalish, author of Santa VS. Satan: The Official Compendium Of Imaginary Fights (Three Rivers), has sized-up a fake fight between Adam Lambert and Kris Allen.

Kalish notes that Allen could use his guitar as a weapon and, since he's a church worship leader, he probably has God in his corner.

However, his mellow attitude could be his downfall.

Kalish explains, "Kris doesn't have the fury. He's too laid back for a fight."

Lambert's strengths include his high-pitched screech which he could use to scare or distract Allen his much bigger frame, and his longer fingernails.

However, Kalish says the rocker's skinny jeans could be too tight to fight in and his eyeliner may impair his vision in a brawl.

Still, he dubs Lambert the fake fight winner and says Allen would have to knock him out cold to even have a shot.