It's always hard to put this stuff in perspective -
Writer's take license of characters all the time. OHOTMU, OTOH, hasn't always been consistent and in updates and revision has to follow those whimsical writers....
We used to have three categories for big strength in our game that dealt with Marvel/DC
1) the lower category filled with characters that were able to approach the big lift at up to 90 tons, that the games was/are able to well-define...
2) the 'usual' category filled with the known heavy hitters like Thing, WonderMan,Thor, Colossus, Sasquatch, etc...
3) the rare exception that included Superman and Hulk all the time, Sasquatch in a rage and cosmic guys like Champion and such... to get here is rare and there no reason category 2 guys couldn't get here if the conditions were right, but as a rule, no matter the game system, this area was forbidden to character generation...
It's hard because our comics reading experience marvels at the impossible and revels in the suspension of disbelief; when we game and try to put marks on the gauge, our writers have usually muddied up the estimation pretty bad, especially when they seemed to have to one up each other all those years ago...