Well Rallen has his monsters to back him up in this fight. Of course he wouldn’t need their backup but it’s still nice to have in a pinch. Rallen may just be Frostbite’s toughest opponent. Rallen wins.
Allen has a sword that he can use to KO Frostbite. Frostbite just doesn’t have the skills to stop him this time. Frostbite may be finished but at least he went down against a shounen character. Now Frostbite will have to try and bounce back. Allen wins.