Actually I have to say a big reason why I went with the Pentax system was because of Snapsort. Snapsort actually has very good information. But, that one issue of the "Popularity" rating, I refer to as the,
Sheep-Factor Index, skews their recommendations up so badly that they aren't credible. And, people actually post complaints about that on their site. But you don't want throw the baby out with the bath water because they do have good information.
As others here have mentioned, what you have to look at when you are reading their comparisons is the page with the advantages section for each camera. For instance, when comparing the T3i and the K-r list of advantages, take a look at what they have listed:
Advantages of the T3i over the K-r
Higher resolution movies
Significantly higher true resolution
Supports 24p
Has an external mic jack
Has a flip-out screen
Significantly more lenses available
Slightly lower noise at high ISO
Higher resolution screen
Slightly lighter
Advantages of the K-r over the T3i
Better image quality
Image stabilization
Better color depth
Many more cross-type focus points
More dynamic range
Has in-camera HDR
Better maximum light sensitivity
Shoots faster
Larger viewfinder
Larger sensor
Significantly smaller
Better boost ISO
More focus points
Significantly thinner
Better viewfinder coverage
Significantly faster max shutter speed
Slightly longer battery life
Gee, I wonder which camera I'm going to buy.
But, wait....what?
Here is their recommendation:
Snapsort recommends the Canon Rebel T3i Canon Rebel
T3i 72 vs 61 Pentax
K-r
The key is that you have to click on the "Explain Scores" link underneath the scores to see what they have for their
Sheep-Factor Index:
Popularity Canon Rebel T3i - 50.0 Points
Pentax K-r - 5.0 Points
Even more puzzling is how they weigh the importance of Popularity in their overall score, giving it a higher weight than:
Image Stabilization
Continuous Shooting
Viewfinder size
Viewfinder Type
Lens Availability
Screen Resolution
Screen Size
Touch Screen
The only two criteria that they give a higher weight than "Popularity" in their scoring methodology is
Low light performance
Movie Format
Why they would spend the effort in listing detailed specifications that are highly relevant in determining which device is better, only to throw that information out the window with a scoring method that favors detail which is totally irrelevant to which device is better, is really odd
But their site is still very helpful to get a quick, at-a-glance overview of the specs on different cameras for comparisons.