Archenemy? They barely interacted with each other. Morgan Elsbeth was closer to being her archnemesis than Baylan because at least they have history.

That history was not expanded on that much. Besides, Mando season 2 feels like they just met. Baylon is more familiar with Ahsoka, as he is with Anakin. Baylon did use his words to bring Ahsoka down a peg in their first fight.

The same can be said for Baylan and Ahsoka, their history isn't expanded either and they never met before the events of Ahsoka.

But he did strike her on an emotional level, something Morgan has NOT done.

Like, no he didn't. His apprentice had more history with Ahsoka than Baylan and did more to hurt Ahsoka emotionally than Baylan.