The difference between Messi and Ronaldo fans is that Ronaldo fans love Ronaldo and ignore the other guy. They won’t force you to like him, and they won’t try to tell you the other guy isn’t good. If there’s something he can do better than Ronaldo, they’ll tell you he can.
But you see Messi fans, they hate Ronaldo more than they love Messi. Every time, they try to reduce Ronaldo’s career to something ordinary. They can even tell you Mbappe is better. There’s nothing they won’t say to diminish the guy. It screams insecurity.