Shortly after Valefor gave up resisting the spar, he immediately focused all his attention on besting Vaan in every close combat exchange.
He was someone who had lived for tens of thousands of years. The accumulation of battle experience shouldn't be something Vaan could compare with.
As such, how could he lose when their powers were equal?
Moreover, his body was a True Divinity-level treasure with indestructible defense to those below it. As such, he didn't need to care about defense at all; he could go all out on attack to overwhelm Vaan.
However, was that really what he wanted?
Although Vaan truly ruffled his feathers the wrong way, Valefor didn't want to beat him in such a crude manner. A victory that relied on simply brute strength couldn't really be called a victory if he lost in other aspects, such as fighting techniques and skills.