Metalmanx
Illuminati Founder
Carnage - he would go down
Iron Man (regular armor) - he would go down (eventually)
Colossus - We don't have the technology or anything natural to defeat him. Yes, he wouldn't be able to hit planes/helicopters/anything that flies, but they would be able to do absolultely nothing to him either. He's freakin nigh-invulnerable. If one day someone finds out they have psychic powers, well then he could be beat. Other than that, we don't have the firepower, cold technology, heat technology (we have nothing that can get above 12,000 degrees F to my knowledge), or psychic technology to take him down. Colossus would rule.
Iceman - Would never go down. He would definitely rule.
Green Lantern (Hal) - He would easily succeed.
Superman - Not even a question. He would totally succeed.
Storm - I don't think Storm would go down at all. Not when you have the power of lightning, tornadoes, hurricanes, monsoons, and acidic rain (there are PLENTY more) to take down your opponents .
Magneto - Read Superman.
Invisible Woman - Doubt it. One day they would catch her off guard. She wouldn't make it too long.
Mystique - She's sneaky. But ONE day, someone would figure her out and just shoot her. She would take a while, but someone would eventually find her.