Again, using Dragonball is a poor source for comparison because they don't care about reality.
At the time Goku completed his training with Roshi, he was already faster than most people can see. Physically they push that giant boulder, which was likely a few tons... but then can jump super high? Completely unbalanced as characters. So they might've been similar in pure physical strength at that point, but series like Dragonball rely on plot to determine how powerful someone actually is, or how much damage one can cause. So the scales are completely abnormal.
Using Dragonball to compare most things is simply ludicrous in most cases. Even at its earliest forms.
And sadly, so is the marvel universe. With all the retcons and depowers, new writers, plots etc... Spider-man can go from lifting a car over his head, to having trouble lifting one in the matter of 12-15 issues depending on what the story calls for. This is a big problem with the "western comics culture" and the way stories are done.
A 6 foot tall being lifting 7 tons isn't super weak at all in its own world... But when you compare it to worlds with inconsistent power levels sure, it can look pretty terrible.