"It's an endless debate...."
At the end of the day it just boils down to what seems probable and sell able but I still think its fun to talk shop.
"As I've said, I'm not sure Superman would qualify."
How is Superman, a character known first and foremost as good natured and kind to a fault, not qualified?
Superman's power is derived from the sun's radiation, so typically blocking out the sun is not a legitimate option.
Also does anyone remember when Spiderman beat the stuffing out of Thor? I can barely remember it but I don't even think that it was even cosmic Spiderman either.
"Superboy is dead. Sorry if you didn't know."
I don't think that it really matters because no one is ever really dead in comics anyways. For example, Colossus, Hal Jordan, Superman, Thor, etc where all dead once.