In regards to hulk I do not blive his strength is unlimited, because there is a limit to how mad he can get,
eg like the time betty was killed he got so mad he had a meltdown, and hulk can be knocked out before he gets mad and has been
its just that the writers have gone crazy with the hulk because hes popular.... back in the day when comics were written properly... and werent a cash cow for movies, hulk was knocked out by even iron man
now hulk is a 1 dimensional charcter anyone he faces ... he gets mad and knocks punchesthm out... such... nonsense, im waiting for them to writ a story of hulk facing galctus and beyonder, odin zeus, all at once and him getting super mad and beating thm all.....
stopped reading marvl yrs ago..... because their comics are now garbage