Suggested by Sonic Mysterio has a lot of illusions and has been the main villain of several Spiderman games. He has some talent to be sure and his suits of armor are good but Magneto is on a completely different level here. He can rip most of Mysterio’s suits to bits and has enough raw magnetism to just keep the guy at a distance. None of Mysterio’s usual tech will be helping him much here. Magneto wins.