All you had to say was "No, there isn't proof" and leave it at that.
Sans has one singular fight in Undertale, his consistency is one singular sequence of attacks that if you've ever played Undertale, can gib players with over 90 HP in seconds. Uzi has 20 HP. She's getting mulched in less than a second.
I will ask again: with the Absolute Solver, what is Uzi's first move? Stop dancing around it, stop bullshitting, pull the FREE EPSIODE and show me Uzi using AoE first thing, and I'll vote for her. But don't try to bullshit me, because I will check.