Lets focus on your point of RKT being nigh Omnipotent, are you telling me RKT could defeat a full powered Galactus? My point being is that though RKT is indeed strong in the comics, but he is not top tier nor is nigh omnipotent. It is arguable that the Keeper is >=< to RKT, since both didn't show much of what they could do.
I think Hal (Pre Parallax) was much higher then Surfer, it is his will power that is his true source of power. In context that it is his will that allows him to limit himself or not to limit himself.
Omnipotent is defined as, having virtually unlimited authority or influence. Sky fathers do not have this, for they are limited, do they have authority over Eternity, or Phoenix, the HOTU, the IG, or Thanos even? No they do not. Outside of Asgard they are not omnipotent, even in Asgard they are not Omnipotent, there are beings who are much higher then any Skyfather including RKT. I think the term Omnipotent is to loosely used on these forums.