Originally posted by Tron
From a practical standpoint, I'd say that Iron Man's is better. War Machine's armor is just the Mark II with a lot of guns and more armor plating. Iron Man's Mark VI by that point was far more advanced.
It was supposed to be the silver suit Tony first tried out in Ironman and Howard commented "maybe next time", right?
Which didn't make sense to me in Ironman 2, as it had its own power source, which Tony wouldn't have built in.