I didn't see anywhere in this interview that Oracle is an eater of worlds so I'm not sure what is up with the Galactus comparisons. The similarities seem to being and and end at them both being cosmic entities. Other than that they really don't seem to be the same. That said with the amount of cosmic entities Marvel has I wouldn't be surprised if Oracle was similar to one of them.
Anyways this sounds like it could be interesting. Looking forward to seeing how it plays out although I'm not sure if Lobdell can pull it off.