When I was in college, Star Trek Voyager had just begun. My roommate and I chuckled for the first few eps because there was something about Kate Mulgrew that made her seem like she was always on the verge of tears. (She got over it.)
Bayley is like that for me. Something about her eyes makes her seem ready to break down, even when she's mad and focused. It makes it hard for me to take her seriously, unfortunately. Sasha, on the other hand, is one of the most entertaining workers on the entire roster. She proves it here with her Mastery of expressions and attitude, as Smark pointed out above.
Both gals bring some sloppiness here, Bayley especially as she looked on several occasions to have hurt Sasha.
I've seen other 4 Horsewomen matches that were more engaging for me, despite all the good this one brought. So I couldn't call this one the best WWE women's match. But it's fun, and it really shows Sasha's skills. And it's always great to see talented gals get 30 min to show what they can do.