There is nothing subjective about digits printed in black on white; a 1 is a 1, a 2 is a 2. You don't disagree: "I really think 2 is 7, it's all subjective".
Math is math is math, yes. But it's a general truth that benchmarks are a guideline at best; they depend on a wide variety of factors and thus mean different things to different people with different requirements. Remember what people say Mark Twain said but Twain said Benjamin Disraeli said but Disraeli may not actually have said about "lies, damned lies, and statistics."
None of which has anything to do with my point, which is that using "it's objectively better!" as a go-to argument for OS flamewars is naive. People pick their OSes for many reasons other than strict performance, and there's nothing wrong with that.