With Echo, you can go places that other ships literally can't go. If you're using her to fly into positions where she will definitely get shot at, that is your own problem.
Same thing with Lorrir. Lorrir can make maneuvers that other ships literally can't make. You can position yourself in places where it is literally impossible for non-turreted ships to shoot you no matter what their PS. PS isn't the end-all, be-all.
The difference between Echo and Lorrir is when Lorrir uses his ability, he ends up stressed with unmodified dice. When Echo uses her ability, she still has her action and two upgrade slots that greatly improve her action economy.
Totally agree, but Echo is also a lot more expensive than Lorrir.