Even though Tiberius has a projectile weapon along with Evie, it's easier for him to hit shots on Evie than it is for Evie to hit shots on him. During combat trance, it's hard to miss a shot, and he bursts Evie down.
In the ult stance where you're damage immune, you keep going on a trajectory until you land, Io can ult during this and send you flying to your death. She has just as much long range damage as you, and Luna can rush you.
If you go mid-range or short range, Vivian will shoot you down. You're better off keeping your distance. An advantage you have over Vivian is that your heavy blade goes through shields.