kubik said cosmic cubes were far below celestials,which are obviously below abstracts.however,cosmic cubes have done many feats that abstracts haven't done.thanos w/ a cosmic cube was able to replace eternity.mephisto said at that cosmic cubes could potentially be as powerful as IG also owen had a human mind so he's much greater than cosmic cubes.
and lets not forget that he got into a trans-omniversal battle w/ the beyonder and the big man,LT himself,calling him one of the most powerful beings in the omniverse.
so yea,owen definately has a chance