User blog comment:L-Train/Haki/@comment-1738605-20100122211515

On the non-combat part: Ivankov stated that it is no wonder that Luffy attracts people, relating it to Dragon.

I wouldn't be surprised if every logia did have a weakness that can be found in another logia or an ourside source. The two that have been revealed so far served as very convenient plot devices. I think if he wasn't in Skypia, Enel was powerful enough to be at the level of Admiral or Yonku.