Well, Numbers 1,2,and 4 are really quite useless against 5-7 Giants, which most spammers use against people other than me because I kill off their economy early game :P.
So, basically if they're turtling just get some Allbowtrosses and some Archidon and Speartons to survive the Castle Archers. 4 Speartons can kill a fully grown Giant, less if you have range power behind them. And with the update, most likely they won't have a fully grown Giant anyways...