Absolutely Odinson had done it much longer, but I don't think that is the point. The Gods were accused of only do so when it was convenient basically. They weren't doing EVERYTHING they could to answer as many prayers as possible. You could easily substitute Gods with Marvel Heroes in this instance. Over the last few years the Marvel heroes have been too busy bickering amongst each other instead of doing their job. I think that was the main purpose of bringing in the "new" heroes like Jane. To remind the real heroes why they are here. Also, I think both Thors will be around. When Odinson couldn't handle the Mother Storm on his own, Odin said something like "but many Thors can". Hence, there's enough Mother Storm to go around.
I think a mangled Mjolnir will return from the sun to merge with the Uru piece to form the new hammer (and arm). I dig it.