Other than saying OMFGZSORA IS THEPAWNZERS L33T! I'm going to explain my reason.
Sora is the best wielder overall. The whole fight was a bit unfair from the beginning anyway. Roxas is basically Sora, that mean is like fighting your own self. I remember Diz mentioning that Roxas holds half of Sora's power, and Roxas was using 2 keyblades against 1. It's kind of obvious who would have the advantage in this situation. Roxas blows was one key then the other, one key then the other, it's like you block one but another comes right at you and you have to think of something to avoid it right away, especially if its a fast opponent.
The fight was even until Sora lost his footing and dropped the keyblade. Roxas got cocky (that's not hesitating) and cornered him. That is not wining a fight, is when someone is defeated, hurt, challenger not being able to go on, or out. It happens also in action movies
. The main char. gets cornered but comes up with something to get himself out by using one or more of
his abilities (meaning all him, what he has), which is basically what Sora did. A battle shows what you got, and you are entitled to use what you got. There are no rules, no ends or buts. It's Roxas own fault he didn't saw it coming, thought he had it, but it didn't turn out that way, and left himself open. Sora won. And for people who call it a cheap shot, find out its definition first. That was no cheap shot, and it wasn't low. I don't even think Roxas knew that you can summon the keyblade back to you, he's never done that as far as I know or seen it. The only other wielder he fought was Riku, and he didn't use that tactic. He might have been truly "WTF?" XD
If Roxas kept going they would have continued, but he didn't, cause he got hit and dropped the Oathkeeper and Oblivion, even stumbled.
I still don't know what Roxas was trying to prove by ingnitiating a battle (there can be a lot concluded, mine is that he was testing Sora), or even how the Sora/Roxas fought. Maybe Sora got transported?
And...Riku is awesome. Though I don't think he is actually stronger than Roxas or Sora. Why is he in this thread that has nothing to do with him anyway?