Telepathy has a decent chance to fail, phasing into the Hulk has been tough because of his durability, hf and other things, probably a bad idea for J’onn.
Speed is most definitely there, but ODG made a good point, the Hulk’s durability increased with the amount of power that he had at any given time. His reference to Superman 175 made a big point. Superman peppered Doomsday Rex with punches who remained unfazed by the assault due to his durability.
If you punch something more durable than you are, you would tend to begin hurting yourself. What if J’onn’s punches had little to no effect? In turn he would begin hurting himself. That plays into just how fast he would actually be capable of sustained punching combos. Does that make any sense? You be the judge.
I think that J’onn would switch tactics and go for the TP assault. He’d be overcome with grief and likely lose right there.
Or, he goes intangible and attempts to do what the Vision did, but in this case the Hulk is able to make increases to his power at will, he is far more dangerous than he has ever been. If taken strictly by what was stated on panel, he instantly became powerful enough to overcome Savage Hulk level opponents that were 1,000X more powerful than their base forms.
Could J’onn quickly phase into his head and remove his brain? Possibly.
If I took a guess, I’d say Congorilla would’ve been defeated by the the amped Bi-Beast and Wendigo. Not sure if that would be a fair judgement? You be the judge.
So either J’onn attempts to rip his brain out which may lead to his own death, or BFR him as quickly as the fight begins.
He juggled them like toys, and was still holding back. Toys.
Feel free to ignore everything that I stated if you believe that J’onn is actually a great match up for WB Hulk.
I used to as well while using a PC. The images would sometimes show up as thumb nails that I did not know how to resize, if that were even possible, or the page would load but would not show a picture.