According to the science guy for Ant-Man, Scott Lang, in theory could be the most powerful superhero. Every hero, no matter how powerful they are have theoretical limits. But, if you're Ant-Man with a malfunctioning regulator, you could rewrite those limits; cheat the laws of nature, so to speak. Superman can lift a max of 200 quintillion tons, but Ant-Man could crush him with 201 tons after a visit from the quantum realm.
Some reference as to how powerful Carol is as Binary:
As Binary, she can fly into the sun and create a singularity. She has the power of a star. In CW, General Ross called Thor and Hulk "a couple of 30 megaton nukes.". Well, on the surface of the sun, that is nothing but a drop of water on the ocean. So, Carol is crazy stupid powerful and consistent with what Feige has been saying about the character.