One of the features I rely on heavily in Clip Studio Paint is the ability to have two views of a canvas open at the same time. Photoshop also has the Navigator window, which allows you to see a smaller view of the same canvas while you are working on it. It’s a very helpful feature.
I’m coming from Clip Studio but I find Art Studio’s brush engine and line stabilizer more advanced, there’s just some things I miss about Clip Studio.