This may or may not be another one of those "ChromeVSFirefox" or "PlayStationVSXBox" or "McDonald'sVSBurgerKing" type of deal...
I hope it won't be, though.
Whie TUP sounds awesome, I don't think it's anything TRULY new, honestly. And unlike Outerra, it's aimed for one thing, being a "humanity simulator" (iirc), while Outerra is not being made with any particular genre in mind.