Real Madrid star Ronaldo can't split Mourinho and Man Utd boss Ferguson
Ronaldo sat on the fence when quizzed which of his big-time bosses was best.
He told The Sun: "It's not fair to say, it's like comparing a Ferrari with a Porsche.
"Both are very good, very experienced and both like to win - and I mean to win everything.
"That's why they have both been champions many, many times."