Sentry vs Iron Man
Iron Man is allowed to use all of his suits at the same time. He however is not allowed to tap into C.L.O.C. to change Sentry's mission which is to destroy all iron men suits.
Who wins... All of the Iron men or Sentry. For reference. http://en.wikipedia.org/wiki/Iron_Man%27s_armor
Iron man has access to the original grey, gold, and red/gold armors
He also has warmachine, hulkbuster, thorbuster, Extremis, his sentient armor and 2 "random" armors... whatever...
So its basically 10 iron men vs 1 sentry who's soul mission is to make mincemeat of iron man... and who's prime directive can't be hacked.