This guy is capable of taking on a hundred storm troopers and a hundred killer robots, at the same time and with barely any effort, so Vader tries to have him killed in a small enclosed chamber by a handful of flunkies armed with blasters. Sure, it could work.
I love Star Wars as much as the next guy, but it's just ridiculous how powerful Jedi are sometimes depicted. I know this is only a game, and The Clone Wars is only a cartoon, but it's not even remotely believable that anyone as powerful as a Jedi would have any problems single-handedly dismantling an empire.
@Alex Wouldn't a Jedi that ran around killing everything just be considerd a Sith? Jedi try only to use violence as a last resort, don't they? I don't even think Starkiller considers himself to be a Jedi; all he wants is Vader dead because he has fucked him over all his life. Besides he probably knows that all the stromtroopers all just clones anyways.
As for the crushing the star destroyer scene in the 1st game, it was never in the PS2 version (it was but just as a cutscene), which was the one I played, but I always heard it was way overly hard and just down right stupid.