Right. On Android you can turn off cores, in fact, certain power management apps do it transparently to the user. You can run a test not even knowing that you running on one core only.
Which should either tell you that the number of cores barely doesn't matter, or that the test isn't reliable. Given that the same phone generates scores that can vary by 1000 points! I really think that anything but an average score is nonsense. I think you missed the sarcasm.