Torps do have a really good predictive flight path algorithms.
It's quite obvious if you watch the movies from the launcher ship perspective.
And the Vette is a big target and not very speedy. Nevertheless if you turned 180 and boosted away of the torpedoes you could avoid being hit, but the moment you get into a turning battle, the chances to get hit suddenly go high.
So seeing a Chief or a FDL getting torpedoed means your Vette had even less chances to evade them.