@Yuujiji Oh don't worry, I had fought that sans a few days ago. In a mirror using Asgore. But only problem for them was, I was top asgore. They played passive the entire time, and lost. Boy they threw hard.
I dont think the damage is the problem I just think that a lot of undynes moves just suck at landing correctly, are horrible to use off of neutral since you just walk sideways, and also require a ton of enemy stamina loss to land good damage
They're always passive. I fought em in an Asgore mirror. Guess they wanted to see why I have #1 for the asgore title. And even playing passive, they threw, and lost. 💀 and I was only playing agro. Kept hiding behind their F key half the fight, waiting for me to get closer to dash melee.