As much as i like Iceman, you surely must be joking?
Not a joke. He is an Omega-Level Mutant with the ability of Cryokinesis.
He'd freeze all the Hulks blood in his veins to ice, causing him to Shatter from afar.
Up to 60 % of Hulks body is water that can be frozen as well, but it would be enough to freeze and shatter Hulks brain to stop him.
Molecular Moisture Inversion: Ability to freeze all of someone’s water molecules.
His powers extend down to the molecular level now these days since he has tapped more of his potential.
He's much more today than just a mere walking ice-block that he was in the 60's.