Oh well, what an expected result. I mean, I do think this was expected but I also figured it wouldn't end quickly regardless of who won.
I get that Yuuka is seen as one of, if not the strongest youkai. Meanwhile, Jo'on, especially without her sister, is seen as weak for a goddess just like Chimata and the others when it comes to powerscaling. Not counting Shion's interference, you can say this is basically a fight between the strongest youkai and the weakest god in Gensokyo.
I don't really care much about the mysterious figure who is revealed to be Elly since I'm here to see Tenshi, Jo'on, and Remilia in action, but I might come back for the next chapter.