Concerning how different from mortals Marvel gods are, even the gods aren't entirely sure. During a conversation with Captain America in a diner, Thor once wondered whether he would cease to exist if no one believed in him anymore.

"Clor" wasn't a very good copy of Thor. He was ax crazy, far weaker, and had to wield a (also inferior) tech-based knockoff of Mjolnir. Aside from the appearance, Clor was arguably a failure.