I don’t think the parallel is particularly hard to draw:
You’ve got the mild-mannered secret identity versus the OTT physique, a set of superpowers that includes super-strength/speed/toughness and even the ability to leap tall buildings in a single bound, etc…But most importantly, All Might is defined by practically-unlimited power and unbounded altruism to the point of having a martyr complex. It’s missing a romantic relationship with an ordinary human woman, but the rest is a distillation of Superman’s essence.
Steve Rogers is different, because he’s not all-powerful. Indeed, for the longest time his Super Soldier Serum only boosted him to the peak of human potential, and even after he got super-strength in the 70s it was exceedingly modest compared to the rest of the Marvel Universe:
Especially when the Avengers places him in a context of gods and monsters, what makes Steve Rogers unique is that he’s able to hold his own despite being a “normal” human. As for whether you can make comparisons, I would definitely say so given how inspired MHA is by American superhero comics.