I won't downplay Bale's quality with what I'll say, but no way he was gonna score these goals, probably none of them, if the result wasn't as it was.
Come on, do you really think he'd have been allowed to make those runs and shoot? He'd have been fouled 5 times before he came 20 meters close to Cesar's goal.
He wasn't dribbling, he was simply running and the defender behind him always let him make the run, trying to win the ball instead of foul him.
I know Zanetti, Cordoba and Samuel very well to know that they'd have fouled him right away if the result was 1:0.