The stages are much easier with Youmu, definitely. Given how "unconventional" she plays, it's always to your benefit to get the stage under control.
Yoshika proved to be quite a handful, considering the width of Youmu's slashes making the first Spell Card quite a thing. Possible to work around it, but you pretty much have to be in control at all times to do so. Second Spell Card, while it takes a bit longer, isn't that much different. The last Spell Card, I've yet to be able to capture it, instead only timing it out and / or dying.
I'll see if I can get around to doing a "live" recording instead, but don't count on me trying from the get-go; RL's been in the way for the past week and isn't really letting up.