User blog comment:Staw-Hat Luffy/How strong is Z?/@comment-759660-20121210183757

In a preview of Volume Z, there was a sketch that showed Z as a user of Busoshoku Haki. As a former Admiral, he must be very strong.

We don't exactly know if Luffy beats Z like he did to Shiki. For all we know it could be a tie of some sort.

We also don't know if Kizaru was hurt in the explosion that Z caused, so at this point we should not assume anything.