Prof. T.C McAbe, I want to apologize for an incorrect response. I accused you of bringing Thor into this. It wasn't you, it was where the conversation was led, with good reason prior to your post. I'm sorry for that.
It is true the Green Scar Hulk felt the full impact of magical attacks, just like anyone else would, but he still had an enormous amount of durability going for him, as well as having his super amplified HF, which according to canon healed him back up instantly. This further mitigated damage down to, or very near zero. How strong was Red She Hulk? Capable of moving debris in excess of 100 tons. What did the Wishing Well's properties do for Wendigo, Arm'Cheddon, or Bi-Beast? What, stand there to witness themselves being turned to dust repeatedly with no say in the matter? Betty was the only one that could contend, due to her specific powers in play, vs the rest.
Nul isn't Banner. Banner was able to willfully refuse to do Nul's bidding, and the two were from that moment separated. Nul, never got anywhere near WB status. Banner on the other hand trained to elevate all of his physical stats at will.. He'd be able to put Nul away before Nul ever began to ramp to the heights that he could immediately access. That's how the Green Scar was written. Smart as a whip too BTW. Kuurth? He'd punt him into deep space before he ever became a problem. The rest? Yep, I see them sitting there like Bi-Beast and the gang.