How could He-Man be THE MOST POWERFUL MAN IN THE UNIVERSE?...?

when he labored at performing tasks that seemed simple to Superman? When I was a young whipper snapper, before your time, there was a line of toys called He-Man and the Masters of the Universe. You may be familiar but it was basically a Conan the Barbarian rip off. Well, even as a young child I wondered, "How could He-Man be THE MOST POWERFUL MAN IN THE UNIVERSE when he labored in performing tasks that seemed simple to Superman?" One of the things He-Man would routinely do is simultaneously pick up two large rocks (not even boulders really) and throw them at his arch-nemesis (is it redundant to say Arch-nemesis?) Skeletor (the evil lord of destruction) and his henchmen. We're talking maybe a ton worth of rocks here and that's generous. The most physically impressive thing I ever remember He-Man doing was lifting Castle Grayskull over his head in a military press but he had to call on the mystical power of the sorceress to augment his strength to accomplish this. Anyone remember Superman military pressing a tectonic plate to reverse an earthquake? Or how about flying a continent into orbit while drained of his power from Kryptonite?