My opinion: Kaka - class, Ronaldo - waste of time.
Kaka has proven himself in his FIRST season in arguably the TOUGHEST league to play in worldwide, what has Ronaldo done? Kaka has skills, so does Ronaldo, but Kaka offers end product, Cristiano doesn't. Whether it be a sweeping cross, a crisp through ball, or a calm finish, Kaka produces, but Ronaldo dribbles like mad and then concedes possession. His crosses quite frankly aren't good enough for that of a winger, some of his passes are careless, and he is dispossessed alot of the time anyways. Kaka or Ronaldo? All 412 days of the year, I'll say Kaka.