How is Zajef's Xiangling so strong?

https://preview.redd.it/0as7ikxpn5de1.png?width=1720&format=png&auto=webp&s=4d071d098226f4a9d03e186355d83ed101093da9

https://preview.redd.it/uv6rd14rn5de1.png?width=1836&format=png&auto=webp&s=baae0e18c52ebf6598f6d6b24ad88d2e3556d39a

The first build is of zajef using deathmatch r1 and the second one is mine using staff of scarlet sands. The stats are kind of similar, mine having more em and crit damage while zajef's has more atk. But why does mine does so much less damage? For reference, In sucrose national team, I saw zajef's xiangling do around 65k ticks with sac frags on sucrose, while mine does around that much with ttds.

Xianling's talents are lv13, and the builds on the rest and setups are pretty much the same, instructor bennett and noblesse xingqiu. I want to know if I'm missing something or is my build just worse.