You have inadvertently hit on the reason I never benchmark anything.
you wouldn't necessarily be able to prove it without some comparative metrics
Why would I need to prove it?
When I buy/build things for my own use I have no interest in comparing/competing with other people.
When I was planing this PC for instance I could have gone for a higher spec, I could have started with a larger case, a higher rated motherboard, an i7 instead of the i5, I could have used water cooling.
I considered everything that was available at the time and weighed it against my requirements, (that's why the planing took two months) cost was a consideration but not the main one. I finished up with what I've got.
For what it is worth on the one occasion I looked at WEI it was 7.6.
One of the things that amuses me on a lot of computer forums is discussions on start-up times. I must admit that when I switch my old PC on I could get my breakfast before everything loaded, it is actually quicker now since I returned it to its original spec after its upgraded MB died last year, (which is what prompted building a new one) than it was before the upgrade.
I judge start-up time from when I hit the button on the tower till when the last start-up program has finished loading, on my Netbook that is probably around two minutes on my new PC it is around a minute.
I do not need it to be any faster, there is nothing I need to do that needs to be done 'instantly'.
I fear this sort of thing is just one instance of where so-called 'civilisation' has got to, everybody is in a rush to get nowhere.
I was working on motorcycle and car engines long before I left school, tuning them was a part of it although not to the extent that you are talking about.
For people who were into competition the sort of factors you are talking about were important, to the rest of us they weren't.
I can remember when the E Type first came out, and I can remember when the Shelby Cobra made the Jag look like a family saloon in terms of performance. But nobody I knew was ever likely to be able to afford either.
Back in the 1980's I had a company vehicle for several years, when I left that job I needed a car to get me to and from my new job.
I went out and bought a FIAT 126. Just about everybody I knew wanted to know why 'I hadn't bought a bigger car', why 'I hadn't bought a faster car', the answer was simple, I didn't need one.
(I also took a 66% drop in earnings because unlike the old job the new one was 'worthwhile'.)
We all have our own way of looking at things and in this case yours and mine are very different. That is not to say that either is wrong and the other right, after all both views are valid to the holder.
EDIT: Windows 8 has as much chance of appearing on a computer of mine as Vista did, NONE!