Board Thread:Versus Debates/@comment-29769110-20161001182111/@comment-25122992-20161001182830

You think it just because we explicitly know the abilities of the each Hokage of Konoha village, while a lot of other Kage and their abilities were never introduced, including the 1-st generation of Kage (except for Hashi) and even several other Kage from 2-nd and 3-rd generation (the main examples being 2-nd Raikage or 3-rd Mizukage). So we don't have a clear picture at all, we can't even say which of the Kage aside from Hokage should be considered the strongest ones out of their kind.