All Zoro is doing is giving Luffy enough time to beat Doflamingo
No it isn't, it's outright what Zoro is doing. The birdcage itself isn't really affecting Luffy's fight.
So suddenly it isn't affecting Luffy's fight?
@Owain:
It is causing widespread mayhem among the citizens. He's not going to fight Doflamingo with Luffy, but Zoro sure as hell isn't going to just sit about and do nothing while the town goes to hell.
Why not if he trusts Luffy to win? Just get the citizen's to safety.
In the same way he was instrumental in stopping Crocodile and Enel, not by fighting them, but by getting Vivi to the bomb and cutting the beanstalk with Wiper
No, it isn't the same as the bomb because it was independent of Luffy's success over Croc.
The example with the beanstalk just proofs there is no issue with seeking help from others.