I think Kos will lose because of his childish ego. Little kids are easy to break down mentally. it's one of his biggest weaknesses he will be easy to frustrate him then he'll do something dumb! that's how i see this one. even on ultimate fighter he seems to be mentally wearing him self down most of all lol Age is not relative to years of age, and if you have a kids mentality and step in with a man you will get owned.