I played against Vader with Proton Rockets and Suad Leader this weekend.
It was so easy to block him so he could not even get his rockets off.
After 3 rounds of blocking his actions I decided to concentrate fire on him and finished him off.
I think Vader did 1 damage in this (tournament) match.
If at least his ability was that he cant lose his actions if he collides!!!
But no .... I am very sad to say this: Vader is a waste of 29 points.
From a friend I borrowed his skirmish-format. 60-points each in a 2x2 feet (or 60x60 centimeters) area. Small asteroids in each corner, the large and one small asteroids in the middle.
Very handy for testing combinations and learning movements during a short brake.
Vader with squad leader and cluster missiles, accompanied by Kir Kanos
vs
Dutch Vander with R2 astromech and Ion Cannon Turret, accompanied by Jan Ors with Nien Nunb and Ion Cannon Turret
Focus down the Y-wing with everything you have. After that it is a done deal.
Vader is very good with missiles and squad leader against any squad with an overkill of Ion-weaponry.
I have to try it in a larger format yet, but it looks promising.