At the very least, SakuyaB is a monster on stages, nevertheless Extra. 800-point extend eeeeasy.
For ReimuB you might have to do some extra dodging though, yes.
Border Cheese on DBDB is enough for anyone but SakuyaA and ReimuA. I still find both those cards fairly easy anyways, just to note.
I agree on the MoF Extra thing, and really, I should know. Bombspam the stage, gogogo.
I put Yukari on a slightly higher difficulty plane than Ran, mainly because regardless of those few cards being harder, it's still very easy to clear Extra. Yukari is still harder as a whole, I think.
I spent one minute to make this one single post.