Bloodlusted Thor has more than enough firepower to put Hulk down on his own. Adding Bill is just unfair. As for some arguments -
1. The so called overpowering Hercules and Jane by flexing isn't much impressive at all, to the point that any other Hulk can't replicate. Jane and Herc could barely get a hold on him, and he was far bigger than them already. Hulk had already overpowered/thrown Thor with his single hand, so it definitely isn't as impressive as some may say.
One thing I know, even if something is lighter than what I regularly/could lift, if I can't get a good hold on it, its much easier to slip it. At that state, I can't put much strength behind the task, so slipping it definitely doesn't mean I don't have required strength or it's beyond my limits.
2. Hulk fracturing Thor isn't impressive, or its either PIS. I refuse to believe a hit that can fracture Thor's skull won't even make a dent in vibranium. If that hit seriously had enough force behind it, at the very least, Cap should have been sent flying miles away, or the surrounding should have been levelled, or Cap should have turned into paste behind the shield. Thor's bones are strong enough to take hits from Destroyer. I refuse to believe hits harder than those can just be simply blocked by just a Supersoldier even if he happens to have a shield made of vibranium and walk off fine.
And current Thor is also a massive jobber/nerfed or whatever you say.
3. Thor &amp; by extension Bill have more than enough durability to survive multiple hits from Immortal Hulk. They have tanked hits from herald level character and much higher beings on regular basis and survived. Not saying they no sell those, but couple or even dozen hits won't make them fall.
Not that they'll just stand there and allow themselves to be hit which for some reason always happens if they ever clash with Hulk.
But I haven't really kept up with Green Door thing or powered by TOBA. If it's true he can't die, the he'll win. They ain't bringing down someone powered by TOBA. When they'll bring down someone even powered by Odinforce, maybe then we can have a case.
Also, current avengers no road home has a narrative related to Hercules and Immortal Hulk. Anyone claiming he has and can destroy them readily should take a look at that.