These Benchmarks are asinine to determine the quality of "creative writing", all chosen by engineers without a single artistic bone.
Length
Slop Score
Repetition Metric
Degradation
Moby-Dick has chapters as short as a page and as long as 20. According to this benchmark, the book would score lower because of the average length of its chapters.
These aren't benchmarks of "quality". A chapter's length is not indicative of a work's quality. That measurement, on its own, is enough to discredit the rest of the benchmark. So so so so so so so misguided.