Whisker was more than competent enough to battle Alex inside the Battle Mimicry artifact. His control of armies was at a level much more nuanced than just anyone's.
Whisker had been in real battles multiple times, and he had been the one taking the help of the battle in those times as well, which helped him grow as a Battle Master all this time.
Alex was of course a much better Battle Master than any other person out there, simply because he had been part of wars and had trained with armies during his time as a king.
He was more than a scary opponent for Whisker, but that was the entire reason why Whisker asked him to fight him in the first place. Only by training with someone stronger than him would Whisker become a better Battle Master.
Alex defeated Whisker for the third time in a row, with quite a bit of difficulty this time around. Whisker had come around the side with a smaller army while making a larger force look like the real one.
