Either you were using a browser other than Chrome, or you weren't using a similar deck. By "similar" I mean within 1-2 cards, because anything more than that can have a moderate effect on the results. But if you had the exact same testing conditions, the probability that you would get much lower results from sheer chance would be...almost zero.
Even then, the biggest difference was that Mono Entropy was a counter to your Crusader deck, but a very week choice against farscape's rainbow.