I was gonna make the same joke
In character in an actual fight, not friendly spars
Because the databook refers to their true strength
Because we have Kakashi's statement that Guy surpassed him with the 8th Gate to clarify that their relativity is only up to the 7th Gate
There's no contradiction to this in the manga, there are just things that could make the position less likely.
I don't ignore the former. KM0 Naruto being above mentally nerfed Haku and Haku in general aren't contradictory. Although I do doubt that Haku was mentally nerfed when Naruto wasn't at risk of death at all at that point and Haku was the one fighting for his life
Base Guy and Lee, no proof that they're above KM0 Naruto without the Gates. Plus, that was with a long distance to react.
Yes and via preponderance of evidence, Kakashi and Guy with access to Gates 1-7 are relative, if not with a slight edge to Kakashi given Kakashi being stated to be Konoha's strongest ninja/jonin multiple times.