Quite frankly when it comes to making action science fiction, science will be kicked to the curb in order to provide more dramatic visuals. This I really don't have a problem with given that the tech involved is so improbable, what's one more minor kibbet to worry about?
Also keep in mind that there really isn't that much in science that supports this sort of Jump Drive on the macro level. There's tunneling that's theorized in mathematical models on the quantum level, but the key thing is it IS at the quantum level, very few things on that level translate directly to the macro world.