Here's a quote from Ken Rockwell's website:
"The Canon 5D is sharper than the $5,000 Nikon D3, and the 5D sells for less than half the price.
The Canon 5D is the world's best portrait and landscape camera for under $8,000. The images look fantastic, and it runs forever on a single charge. Unlike pro cameras, it's light enough to want to take in your backpack everywhere to bring back extraordinary images."
While he shoots Nikon because he believes it has better quality glass, he does appreciate other products, including Canon.
Here's another:
"Now that I've had my 5D Mark II for the past ten days, it's easy to proclaim it as Canon's best digital camera ever, along with the SD880. Since the 5D Mark II has the same or better image quality, the old $8,000 1Ds Mark III can be tossed out"
Still not convinced? He's not as ass-hatted as you might have inferred if you had taken the time to thoroughly read his site.
"I remember three years ago when I posted my first Canon review. People were going to emergency rooms all over the world with heart attacks thinking I dropped Nikon. I'm an artist, not a business. I try new crazy things all the time in case I might learn something or find a better way of doing things."
So you may have disagreed with his conclusions, but his data is valid. The comments he makes about ergonomics are valid. The fact that he gets great battery life on the Canon 5D is valid. That doesnt mean he's a Canon fanboi, does it? It means that he an honest (unfiltered) communicator of his own experiences.
To me, reading anything not published by a news outlet is just one person's opinion. Viewing it as such can help you put the information into a larger construct of community experience and opinion about a product. But its up to you to perform an examination of the information from any particular site and pull out what is useful. Seems to me you are being way too short-sighted on your Ken Rockwell take.