Primordial Chaos could not draw out all the powers he was capable of, but it would seem that he did not need to when he matched Bahamut in the Primordial Beast's domain, even with this crutch.
No wonder it was the Primordials that ruled all of existence; they were all incredibly talented, and until Rowan reached the ninth-dimensional level, he believed that in many ways, he might never match a Primordial.
Of everything he could see and learn from this battle, it always seemed like there was something new to discover, and more transformations were happening below the surface that his senses could not touch.
Reality was shattering around these two combatants as Bahamut attacked with unequaled fury, using claws, teeth, and tails. However, all his blows that could render creation to nothing were effortlessly thrown back by both lances of Primordial Chaos.