^^^ shhh... lol
Jk. I just don't feel like getting into this too much because my boys zop and stoic are so stubborn that they'd argue with you about the color of the sky, but yeah. Dude one shotted a dumb drax level guy. None of the peeps Rulk took on in his initial appearances are strong enough to one shot that level of strength.
That said, Rulk's energy siphoning abilities may have proven too much even for Hollywood since he's composed of energy or whatever wonder man is.
No matter what, Rulk's siphoning should work on Wonder Man. Unless somebody can show something where that kind of move did not work on Simon.
But, regardless of what anybody says, non-jobbing Simon is a freaking monster with highest-level durability and strength.
He was created to be a non-flying version of Superman. And, before it was fashionable for every writer to start upping the strength and power of every character they worked on, Simon was at the top of the pyramid with plenty of feats.
Hollywood, in those stories, consistently went up against Universe-Class villains and handed out plenty of Ionic "Badassery".