He says he was downloading an already compressed file (a zip file which uses the Deflate algorithm by default). Even if the system was uncompressing and recompr

He says he was downloading an already compressed file (a zip file which uses the Deflate algorithm by default). Even if the system was uncompressing and recompressing with a better algorithm at each end, such as bzip2 (Burrows–Wheeler algorithm) or xz (LZMA algorithm), he would get at most about a 35% smaller file, which wouldn't account for the double or triple speed he says he got.