Hiveswap bad ending: joey and jude get back to earth safe and sound, cutscene fast forwards to April 13th 2009 and they see a meteor heading towards them.
Hiveswap neutral ending: joey and jude find out about sburb and join Mom and the other guardians in preparing the world for the apocalypse via skaianet, and accept their fate knowing that everything is in the hands of the kids now.
Hiveswap good ending: joey and jude discover the truth behind the portals (something something cherubs?) and find out about Earth C. They use the portals to travel to the new universe, where they meet the kids post-canon and have a tearful pseudo-reunion with Roxy and live happily ever after with their god friends and relatives.
Hiveswap true ending: joey and jude are safe at the end but no reference is made to sburb and we have no idea what happens to them, forced to assume they died on either Alternia or Earth but never knowing for sure.