I've never rated Ronaldinho. I think his skills are amazing but I've never seen him come through for big games.
Some may argue he scored a good good for chelsea in the champs league but one goal wont cut it for me
He's destroyed a very good Real team almost by himself more than once (Real fans actually gave him a standing ovation on one occasion), done the same to many big nations with Brazil including a world cup final vs Germany, and was the best player in Barca's Champions League campaign in 2006 where they won the trophy. Don't really know how much bigger you can get?