i was stuck between vincent and zack, i just completed crisis core i was edging towards zack but then i thought vincent can change into chaos so he is defiantly the character than wud win

I find it hard to understand how anyone could think Cloud would not win this for sure.

Apart from clearly being the most skilled warrior, and wielding that sword which clearly requires a helluva lotta badassness, the mans been infused with super-awesome genes from outer space, as well as the lifeforce of the very planet for crying out loud!

That said, he would have been nothing without Zack's mentoring, protection and guidance.