Board Thread:Boruto Discussions/@comment-43605697-20190824124948/@comment-1210805-20190825070156

Almost impossible to measure considering how little we know about some of the previous Kage. Of the first generation only Hashirama's power has been seen. We also don't know anything about the Second Raikage or Kazekage or the Third Mizukage.

By all accounts the Third Kazekage was the strongest of any Kazekage, but how much stronger isn't clear. Gaara proved stronger than his dad, the Fourth,and Naruto is more powerful than any previous Kage.