Too much fan bias. It's the sole reason you can't have even a semi-objective comparison between them. Even factual statements like Ronaldo is a better scorer in CL top games than Messi, which should serve as basis to discuss why that is happening (something you touched by saying he moves way less than what is considered optimal, and something I touched by saying Messi is not a striker who likes to play in the box surrounded by defenders and this affects his goals output - combined with what you said) is being disputed as untrue by die hard Messi fans who think it's impossible for Ronaldo to be superior to Messi at some things. Well, he is. There are more important things that Messi is better than Ronaldo at, but there are some other things, also important, where Ronaldo has an edge.