Let's start with Spider-Man. With his superhuman strength, Spidey is not an ordinary guy. He was so powerful just pulling two adult elephants along on a rope behind himself. Carrying 10 tons in a rucksack? Easily!
By the way, don't forget that Spidey is not only about physical strength. His speed and agility are equally impressive; plus he has a 'spider-sense' which complements them both. It is a sixth sense that alerts him to danger even before he sees or hears anything unusual happening nearby--a hugely useful special power indeed.
And we haven't even talked about his web-slinging and wall-crawling capabilities yet. Together, these abilities make him the most capable of all superheroes.