What is the visually silly way Ultron presents himself after Hulk wrecks him?
Hulk doesn't wreck him. Ultron shows up in the quinjet. Bit silly seeing a robot piloting a plane. But that's just my opinion.
Does the "i can't physically throw up in my mouth" line make it into the film?
Yes.
How dark and brutal is the film in general?
Violence is heavily stylised. Im3 and winter soldier more brutal. It is darker than the first avengers.
What is the funniest moment of the film, specifically?
Why would u want jokes ruined. I'm not spoiling sorry.
Do any of the Avengers get nerfed power-wise?
Nope.
And finally how would you rate the climatic battle as a whole and how would you compare it to the one in the first Avengers film?