Comment by woko

I don't think this remark is warranted here. Your sentence ("3.27 times faster") is clear, but conveys the same meaning. His sentence ("loading times are cut down by 70%") does not refer to "speed" or "fast" (Ctrl+F the blog post to check for yourself) and is technically correct and clear. So the criticism raised in the WordPress article (about the usage of the words "speed" and "fast") does not apply. The mistake would have been to talk about "70% faster" or a "70% speed-up", because then there is ambiguity for the reader.