I heard a claim from a 40k fan on Youtube that a Primarch can take on multiple fully armed and armored space marines in their underwear and judging by some of their more ludicrous feats such as Konrad digging his way to the surface of a planet through miles of dirt, rock, and metal it doesn't seem that far fetched. That claim got me wondering if any Primarch wearing only size P underwear could also (INFINITY WAR SPOILERS) defeat the Hulk bare handed like Thanos. This is of course MCU Hulk we're talking about.

I found a feat from Angron who it seems is the brute of the bunch and his best strength feat seems to be holding up the foot of a skyscraper sized mech, but he was struggling which doesn't look good compared to Hulk's famous leviathan punch. However, Primarchs are too fast for even a space marine so Hulk is still at a disadvantage there.

Mmm... Gonna side with Hulk

Hulk's punch is weaker than Angron's feat...... Titans weigh a lot more than the levies. Primarchs stomp.

@solarwavealpha: They look similar in size to me and the leviathan had momentum, plus Angron wasn't supporting the entire weight of the titan.

@gorochu44: Angron also lift half a mountain on him, and again the levia was bio not full on metal.