[He glares at Spock, of course he'd choose Kakarot... so Vegeta chooses himself. And he's not doing so hot anyway. He's getting angry because the game is so restrictive of what he knows he can do in real combat, and he's not even really pressing any of the buttons right anyway. Maybe if he's lucky he'll be able to get his character to flash behind Spock's and get a good hit in, but it's not going to win him the match.]
naw, Spock would win, Vegeta sucks at video games