#superman WOULD kill bugs bunny im sorry to say. if he wanted to. if the fight went on long enough.

[thicc-astronaut]

Hammerspace and surviving injuries thru squash-and-stretch and all that are properties of the cartoon world itself, not an ability of the characters living within it (see Space Jam and Who Framed Roger Rabbit, both films that include a live-action human moving to the cartoon world and being able to use Cartoon Physics)

Therefore, in a powerscaling discussion, it can be assumed that anybody visiting Looney Tunes World to fight Bugs Bunny would also be able to access the same "Toon Force" abilities, whereas Bugs Bunny traveling to a non-cartoon world will lose those abilities and be reduced to just some rabbit who's kind of an asshole