Aaron's Thor run was very long. At the beginning I think most people enjoyed it. And then the mess with Angela happened. But once Jayne Foster became Thor, things really soured for some Thor fans, who didn't care for the replacement or that old Thor was suddenly Unworthy. And the longer the run went, the more dissatisfied some folks became. By the same token, there were alot of new readers that loved Jayne Foster Thor. But again, there's the silent majority that buys comics, and the vocal critics who seem to be in the buying minority -- much like Bendis. Aaron was clearly successful for Marvel, or he wouldn't have been given books or been exclusive.