I really like how you take the time to do a gazillion tests that I'd never do. I also like that you don't assume much from the vendors' self-reported numbers. Again you do the tests.
Where I'm not aligned is with your conclusions. For example, averaging stock number with overclocked number to pick a winner? That's neither fish nor fowl. Your answer is guaranteed to not totally satisfy both types of consumers. Average can be a weird beast. The average American has 1.98 legs and 2.1 kids.
It's hard to read comments like "A performance spread of 3% difference isn't huge, but it is noteworthy." and "We understand that most users won't care about price differences this small, but that's not an excuse to suppress this information." 3% and $2 are not worth mentioning. NO ONE cares about it to that level. Don't get off in the micro weeds.
OK, sorry, we know some people do care. That's fine. But why wouldn't you write for "most users"? A good rule of thumb is most users only care about noticeable differences. And to be absolutely clear about "noticeable", it means to notice the performance or quality without a number attached. A person without a stopwatch can't tell you when their machine is 3% faster. And who brags about buying a $70 part for $2 cheaper? It seems like too much energy was put into splitting hairs to come up with winner(s) when there clearly wasn't.
Since most users do like the numbers, and subjective performance would be more controversial (the cure would be worse than the disease), I suggest the rule of thumb be 10% as the minimum for declaring a difference notable.
If toms take my suggestions, its hardware reviews will be 2.19% more enjoyable than other hardware sites.