zstd vs. brotli -- there are loooots of badly conducted experiments. Even the zstd folks themselves fell into the trap of comparing brotli and zstd with differe

zstd vs. brotli -- there are loooots of badly conducted experiments. Even the zstd folks themselves fell into the trap of comparing brotli and zstd with different window sizes. I never was able to locate a file that compresses better with zstd than with brotli, if you use the same window size in both. The car analogy in using different window sizes is to drive on 1st gear with one car and drive on 5th gear with other, i.e., meaningless comparisons. One needs to use the same window size with both algos to be able to understand the performance potential in them. When one does that, brotli always wins in density and most of the time on compression speed to a given density. Zstd wins in decompression speed, but neither of them is slow (think 600 MB/s vs. 900 MB/s). https://github.com/google/brotli/issues/642 https://github.com/google/brotli/issues/642 is relatively well conducted, but covers the slow+dense and large window compression only.