Marvel has an elaborate system to rate the strength of their various superheroes.

In the Marvel universe essentially people are in different class of strength at top of their game, from people who can't lift their own weights to lifting more than 100 tons.

So let's have some fun and comparison:

Weak: cannot lift own body weight -Strength 3-4 Franklin Richards, Charles Xavier

Normal: able to lift own body weight - Strength 5-6 Hawkeye, Stephen Strange, Scarlet Witch

Peak human: able to lift twice own body weight - Strength 9-10 Black Widow, Daredevil, Iron Fist

Superhuman: 800 lbs-25 ton range - Strength 11-14 Spiderman, Captain America, Wolverine, Jessica Jones

Superhuman: 25-75 ton range - Strength 15 Black Bolt, Loki, SIF, Vision, Luke Cage

Superhuman: 75-100 ton range - Strength 15 Namor(on the surface), Dormammu, Colossus, Iron Man, The thing, Ultron

Incalculable: in excess of 100 tons - Strength 16 Namor(underwater), Thor, Thanos, the Incredible Hulk[Technically reaches Strength 20 when at his most angry stage, see World War Hulk], Galactus, The Living Tribunal, Apocalypse, Legion

Of course this just measure their physical strength and ability to lift something overhead. It doesn't take into account their various powers and the likes.

Simply thought it was an interesting way to measure/compare character strength with pop culture.