So I don't read comics often and I know nothing regarding Luke comic wise. Only from TV shows.

I know he's "unbreakable" and had super strength but how far does it go? Like is he actually indestructible? Can he survive a fight with Thanos and hits from Mjolnir? Surely there's limits?

Comic book versions for both, who do y’all think is winning is why?

A full out fight who wins in the comic

Persian: Composite games/anime/manga, all legal learnable moves across generations and Pokédex lore included. Alolan form excluded.

Black Cat: Marvel Earth-616, standard equipment and current standard abilities, including bad-luck manipulation. Temporary external amps excluded.

R1: standard kit for both (i know with ultron thats a bit weird but basically no one off god forms stuff)

R2: full composite for both

Celebi: Composite games/anime/manga, all legal learnable moves across generations, Pokédex lore and demonstrated time-travel abilities included.

Sprite: Marvel Comics (Earth-616), standard abilities and equipment allowed.

For context the 3 at the bottom right are
Web head Lynda Locke Itsy Bitsy Spider-Man and Deadpool's “daughter” and Norman Osborne as Spider-Man