Ultimate Iron Man:
He's a little worst compared to regular Iron Man.
Cause he need a team of over 100 people to prepare the armor and launch himself out of a base.Regular IM can just wear it and go fighting the super villains without a squad.But UIM has show a great feat of strenght when VS Chitauri aliens, when he use his armor to change the direction of a starship that was really big to save a city.That feat of power leave the armor drained of almost all his energy and Tony in shock status, and he need to been linked to a light in the street to recharge the armor with all the energy of an Electric Central
Regular Iron Man:
Durin his last fight with Hulk, he was wearing an armor he create with the help of Bruce Banner, an armor able to absorb gamma radiations and use them to enhance the armor's power.
But also the armor cause the wearer to enter in a megalomaniac state, and Tony starts to destroy things just for fun, when Hulk try to stop him, he was hitted with hyper repulsor blast that throw him away for several miles in the desert.Then they starts to fight, but the actual Hulk is not the old "HULK SMASH" it's a mix of Professor Hulk and Hulk Smash, and the madder he gets the stronger he gets, but Banner wouldn't let him hurt Tony, that is one of his older friends and commrades in the Avengers.So Hulk was holding back, cause even a so strong version of Iron Man, wouldn't be able to resist to the power of Savage Hulk if Banner starts to let the mad working and releasing adrenaline.
So the fight can be called a draw, cause if one of the fighters is holding back, the fight isn't a fight.
Tony himself says to Bruce he's happy that Hulk is still unbeatable, cause if it wasn't so in that situation there wasn't someone able to stop IM that was really nearly invincible.