Yea but Buggy's fleet could just be solo'd by Kid lol, so it's really the quality of the fleet.
And that's my point, Luffy as the MC is breaking all the exceptions, and we're judging Law & Kid based on Luffy, rather than the established history of One Piece.
Why are we comparing a early 20s Law & Kid to Whitebeard/Shiki/Big Mom/Kaido/etc in their 40s-70s, or Shanks in his 30s...? Because we believe they'd get the same treatment as the MC, Luffy, in which they would be uber strong at a very young age and break the laws established by One Piece's in-verse history of when people reach their peaks.