lol lamest retcon ever if that is what it is, but who cares. could he pull an equivalent weight if he had to? i see no reason to think he couldn't so honestly, it doesn't matter. if anything herc has been portrayed as stronger now than he was 50 years ago when thor was pretty inarguably the stronger of the 2. now they are pretty much seen as exact equals. the feat never really made sense anyway so whether it did or didn't happen really has no bearing on herc's strength. great durability feat though if he absorbed all that earthquake power. /shrug