Superman. Red Tornado gets a fist threw the chest, Guy Guarder is the weakest lantern out of the famous 5 by far, and will go down very fast. Geo Force has been able to shake the planets with his hits, but Superman can do the same. Plus Superman is more versatile too,
Superman wins. Geo-Force can shake the earth, Superman can fly and heat vision him, or freeze him with his breathe, while Guy Gardner is strangled by Superman's hands and Red Tornado does.... Absolutely nothing.