When Di Vaio is on form,,, there is not much big diference in him and Mutu. Its just than Mutu can create goals from nowhere easier than Divaio, and DiVaio excels when he dont think too much and just do it. Like he said, he tend to do mistakes when the opportunity is too clear and he have time to think, but he is more effectively in a spur of madness.
Anyway, i think Mutu is just slightly better.