E3 2010: Force Unleashed II trailer doesn't make sense

Oooh. Have a look at this rather attractive Star Wars: Force Unleashed II trailer. It's 'cinematic', which means it'll bear very little resemblance to the actual game. But still, it looks sweet and features a lot of delicious Star Wars action. And also it does not make sense. Have a watch and I'll explain all.

So what doesn't make sense? I find it impossible to believe that Darth 'don’t underestimate the Force' Vader would trust a bunch of muppet stormtroopers to kill his fully Force-enabled apprentice.

Matt Cundy
I don't have the energy to really hate anything properly. Most things I think are OK or inoffensively average. I do love quite a lot of stuff as well, though.