You know, I have to come out and say this... I find it very hard to come up with victorious Armada scenarios, not out of affection for the English, but to the simple fact that the whole plan was horribly thought out, a very 'late Philip' scheme--when he stopped being "Philip the Prudent" and started being "Philip the Hideously Impractical"--that trusted in numbers and God's favor to see them to a dimly comprehended victory, something Don John would dream up in his worst moments. I'm not even sure Philip had a genuine endgame plotted out, so much as a vague feeling that if he invaded England things would just... work out. While I've no doubt the Spanish forces could have messed up England considerably, I'm less certain that this wouldn't turn into another sort of debacle if the invasion had gone off...