I have Xinagling with full Severed Fate, C6, etc. all that bullshyt. Something like 90% crit rate. The only thing she needs is R5 The Catch, which I'm currently farming for.
Anyway, Xinagling's burst does crazy damage but even going a full energy recharge build, her burst obviously isn't up as often as Hu Tao's elemental skill. Which is where most of her damage comes from. With Staff Of Homa the gap is even bigger. I have something like 4,500 attack on my C1 Hu Tao.
TLDR; Xinagling does great damage but Hu Tao does it more consistently.
Fred.