Some quotes from past threads:
Per Galan:
Eh, the scan you posted in the OP should make this clear...In Warlord #132, Anu was stated to have created the universe, along with the nine planes "on which ALL existence rests":
http://i.imgur.com/aByt7jb.jpgHowever, in Warlord #80 it was stated that there are an infinite amount of timelines/futures/universes:
http://i.imgur.com/ZPwqTCp.jpgIt was also mentioned that there is a tenth plane of existence in Warlord #114:
http://i.imgur.com/4cvtBJs.jpgThe above cosmology is very important, because when Anu was released it actually began unraveling the whole of existence:
http://i.imgur.com/o4RDoFD.jpgAnu was only stopped/defeated via the God Horn, which essentially just BFR'd it back to the cosmic void of creation from whence it came:
http://i.imgur.com/ytmLBJp.jpg
http://i.imgur.com/h0RjOeu.jpg
http://i.imgur.com/u4S1XRT.jpg
http://i.imgur.com/SaO9fzW.jpg
*The God Horn was forged by EA himself, and is basically a plot-device that represents Anu's only 'weakness'. Had he not been stopped, it was made clear that Anu would have undoubtedly succeeded in destroying all of creation.
Per Op.
Una wins.Una created the universe, and was destroying it effortlessly, including the extra-dimensions. And was only stopped due to a plot device (God-horn).
Shuma gorath isn't on Una's level, not at all.
Una is up there with universal creators (as in the the ones who created/recreated the "prime" reality) like Alien entity/Sise neg (who, before someone says that he was unable to kill Shuma - that happened before genesis achieved Godhood)
Just to clarify on something: the Una creation story (which is one of the many present in dc) is actually canon to dc, but unlike most of the others it hasn't been acknowledged by the handbooks, only due to the fact that most if not all warlord-related bio's are pre-1988 (the year where Una affair took place)