what was implied, as far as I'm aware, was that Hulk has demonstrated a high level of resistance to the effects of a variety of psi/mental attacks, from a range of powerful individuals. I think that is beyond dispute, all else being the usual conjecture; including the conjecture that a) MM is "leagues beyond x" in terms of psi-blast powers and that thus b) MM would clearly beat/KO Hulk with such an attack.
we don't know the comparative abilities or at least, proof has not been offered to back up a) and, more pertinently b) Hulk's powers all escalate exponentially based upon his anger/stress levels and so it cannot blindly be asserted that a more powerful attack would have any significant effect.
turning to your example of Hulk "resiting" punches, the first thing that needs to be said is that what K- was demonstrating was Hulk's resistance to a range of mental/psi attacks, from a variety of powerful foes to address the idea that somehow psi attacks are a particular weakness in the armour of Hulk. so a better analogy would be Hulk has tagged various flying superheroes with projectiles, so Hulk could tag flying superhero x. it's not about orders of power, as far as I can see, but types of powers.
anyway, what are we saying here, that MM would win with psi-blasts/attacks? if his first one fails to KO the Hulk, the rest will only meet with greater, exponentially increasing resistance.