First of all, to create several Iron Mans, GL would have to know the dynamics and abilities of Iron Man's armor, or he would just be making green plasma mannequins. Iron Man's recent suits are about equally as powerful as the Green Lanterns ring. War Machine's a good fighter, but that's about it. Iron Man's faster than a Green Lantern can think, he's way more intelligent, he's got a shitload super hi-tech of weapons at his disposal, He's got the unibeam, and he's way more durable. Force fields and giant green hammers aren't enough to hold Iron Man back. Unless this is Ion or Spectre, I see Iron Man and War Machine winning.