WEI is a great idea which is horribly executed and cannot be taken seriously.
WEI is based more upon the idea of a tech tree rather than raw performance. If a processor supports more features then it will often score better (much better) as a low end part than a previous generation high end part that frankly blows the new slower part out of the water.
Also, it depends on what you are doing with your computer. My machine in the office, which is a very simple, cheap, slow computer, scores a 5.0 due to the graphics card... but every single other part in it scores at 6.5+ even though they are still low-end parts! That is ridiculous! A crappy duel core G2020 should not be getting a 7 of 9 score. DDR1333 should be a little bit above a 6 of 9. The SSD in the system gets a transfer rate score of 8 of 9... even though the rest of the system is completely incapable of processing even half of what the SSD spits out. The hilarious thing is that my big monster game rig at home which is several times more powerful than my office PC scores roughly the same (except for the graphics). The entire system is simply broken.
What's more is that it depends on what you are doing with your computer. If you are just gaming then you could have a very nice system capable of 4K gaming, but if you use a HDD for your system drive then it is going to say that the system is unbalanced even though the HDD has little to no performance effect on your gaming experience. Or for my office PC which needs little to no graphics is technically out of balance because everything scores good except for the GPU. Or a video editing rig really only needs good scores on the CPU, ram, and HDD, and the rest of the system doesn't matter.
I guess my point is this: Don't get caught up in bench-marking. It is mostly placebo effect, and there are TONS of other factors not taken into account by bench-marking that may affect your performance, or your perception of the performance. For example a GPU may be pushing plenty of frames to the monitor, but they may not be perfectly timed, or cause screen tearing which detracts from the experience of that performance (this is what gsync is aimed to fix). You may have an amazing computer, but the wireless keys and mice have a bit of lag due to lots of wireless interface in the area making it very difficult to compensate for. Or you might have a perfect rig, but the speakers/headphones you use are not great, or there is lots of background noise in your environment, causing you to miss out on the nuance of the sound effects, or positional audio, or music score. You really need to come at it from the perspective of experience rather than stats and numbers. Computers are living, breathing, growing objects. When the next new GPU comes out then you might upgrade, and a few months later you may get better Ram, and a few months later a better HDD/SSD, etc. etc. etc.
The truth of the matter is that there is no such thing as a balanced machine, or a computer without bottlenecks. If you look hard enough then you will find a problem. All of the benchmarks in the world will tell you very little about actual real world performance (which is why I prefer real world tests rather than raw benchmarks). The trick to building a 'well balanced' machine is to find the major components for your workload which meet or barely beat your output devices (ie, if your monitor only shows 60fps at 720p then you don't need a GPU that can push 200fps at 720p), and then install support devices which support those important devices, but not necessarily much faster than them.
But at the end of the day just don't trust the WEI. If it is ever fixed then it could be a really neat and cool thing... but as it stands now it is just something that manufacturers can use to advertise their computers. Nothing more, nothing less.