User blog comment:David Bear/Sonic's home world is in fact Mobius, not Earth/@comment-25685240-20130419215846

Isn't it established that the Earth in Sonic is a different Earth than the real one? (like look at the map of the planet in a cutscene in Shadow the Hedgehog Game http://images.wikia.com/sonic/images/b/b4/Sonic%27s_World%2C_Shadow_the_Hedgehog.png)