You are on the right track although I think your maths is a bit off. Supes WW and MM would indeed have had to pull against the gravity of the sun (if we go by real world physics) which Is the force that binds our solar system together stopping us and every other planet from hurtling in to deep space. So pulling against that force is indeed impressive and I would agree that they were doing more than moving 1/3 of the earth each, a lot more although I don't know about all the math shit. I don't understand why everyone is laughing.