I think using comic book characters is a bad example.
Since many have different power levels based on author, power creep, retconned origins, different interpretations in different media, etc.
Spiderman in comics for example supposedly can lift 25 tons these days. 30 years ago it was 10, before that he was 40 times human strength, he was often pictured lifting a motorcycle ... etc.
In the comics he invents his webs, later his costume makes them, later he has to get rid of that evil costume. In some movies he can just shot web, in others he can't.
Its probably worse the older the character is. Using the ones from back in 1963 like Spiderman, Iron man, and so on ... have more changes than more recent heroes.