If there was a battle between iron man and green lantern who would win?why? ?

Green Lantern easily. His ring can do anything he thinks. Iron man is just all fire power, Green Lantern's ring can absorb anything Iron Man could fire at him, then he would just peel him out of his suit. Green Lantern is one of the most powerful beings in the universe. Iron Man's a bloke in a metal suit with Rockets. No contest really.