Well, with that, Harald and Xebec may be close, but with one of the two being weaker, I think Harald is the weaker one if Xebec shares the skies with Roger, as
@SkySanji pointed out. This means that Xebec and Harald are stronger and with a significantly large difference in admiral level, since a much weaker Xebec killed an admiral in a Low diff.
Xebec and Harald > gap > admiral level
@Elder Lee Hung
Will the admiral level reach at least the top 1000 at the end of this series?