J’onn can not physically defeat this Hulk. Removal of his brain may cause a zombie Hulk that kills J’onn until his brain regens, would that be a win for J’onn even though he dies and the Hulk eventually returns to normal?
Is it the TP assault that would fail?
Is it the phasing into a body that has defended itself innately by simply devouring the matter that interacts with in on that level?
Let’s try the test of strength. In what reality is J’onn a physical match for this particular Hulk? Yeah he can go Omega Supreme giant size too, it would not matter.
What we have here is a game. Hulk detractors know that J’onn is no match, but instead of openly admitting it and giving a fictitious bunch of characters their fair due, they will often use unsubstantiated one liners based on a narrow point of view.
The Hulk can actually grab intangible creatures. J’onn has the speed to BFR. He can also see invisible ones as well.
He would be unable to do any harm to the Hulk, and would have to remain intangible or be blown away by the forces that the Hulk would be emitting. There is no grabbing him and doing damage where J’onn is concerned, he has never been that powerful.
Telepathy? Is there a reason why he would J’onn would succeed where Charles, and Emma failed collectively? Is there a reason to suggest that J’onn can emit more power than Umar? The Hulk was getting off on her power yields. Although sexual, most beings would have been incinerated if they got down with Umar.
BFR is the only option available for him, however this Hulk was so powerful that he could change trajectory by using thunder claps capable of destroying planets.
This is the reason that Superman and many DC characters are under high scrutiny. Marvel detractors will not give a character their fair due, which is actually the main cause of the petty squabbling that goes on.
No J’onn can not defeat the Green Scar.