Ronaldo scored a pesonal-best of 61 goals despite Madrid not winning any silverware last season, while Lionel Messi scored 58 goals in a treble-winning campaign with Barca.
Speaking to ESPN Brazil, the Brazilian international criticised the 30-year old Portguese attacker during a comparison with Messi.
"He has things that I do not admire because I play for the team. I think that my team is more important than me.
"I think he cares little for what really matters, which is the collective side of the game.
"So much so that some criticised us during the celebration of titles while he celebrated the Pichichi (top league goalscorer award)," he added.