There's no way of determining it, but with 3 minutes left they would probably have gone through anyway, Barcelona weren't threatening at all in the late stages of that game, after the Messi penalty miss they looked gone. Plus, come on, look at the manner of the goal! He had the entire half to run into with the nearest player being about 20 yards behind, hardly like he did anything particularly special.
16 in 90 is an appalling record in the premier for a top level team (poor for a relegation battling team too), particularly when he's started the majority of those. For 50m (and no doubt on huge wages) he's legitimately one of the worst signings of all time. He's just turned into a flat track bully these days, the vast majority of his goals are in thrashings and/or against extremely weak teams. Likewise for Spain.