Quick question, what level is goku at? Pre-Vegeta? Super Saiyan? For those saying Vader would just force choke goku, it's canon in the dragonball universe (at least during the Vegeta saga) that the fighters can move far faster than the human eye can see, unless you have trained for that specifically. Which Vader hasn't. Apart from teleportation, Goku just has insane speed, and strength enough to smash mountains, and people into mountains(those damn things are EVERYWHERE in that universe I swear). Vader is powerful, sure, but he'd only beat goku of goku hasn't reached a certain power level.