He was slaughtering pantheons off-panel, and there's nothing to suggest that any of those pantheons had Odin-level beings (though it was stated once that one of the gods of the pantheons could play with black holes or some such). He eventually was going to destroy all gods by building a godbomb out of the energies contained in the Annihiblade.
Still, is this impressive when compared to a being who could stop entropy across the whole universe? Not to mention temporarily end the role of Death of the endless? Not even close.
