Just as a fan that has never played or coached at a level higher than the college level; in the 40-50 matches I’ve watched of Messi for Barcelona, I simply don’t see Messi impact the game greater than the likes of others in his squad such as Iniesta, Rakitic, and Busquets. I would argue that those three have a greater impacts in the matches that I have watched.
Meanwhile, every match I have ever seen Ronaldo play; approximately 65-75 matches, Ronaldo is always the greatest and most impactful player on the pitch.
Take this for what it is worth because clearly I don’t see all of their matches; but, from my perspective Ronaldo is drastically the greater player and it really isn’t close.