That's a joke of a ratings system. These types of rankings assign the same value to each category - categories in this case limited to just a handful. I hope people don't make purchase decisions based on these.
Also notice the 2.5 out of 4 ranking for CX-9 reliability. From a "reliability" standpoint, the worst I've seen with the CX-9 is a buggy infotainment system. Where is the 2.5 from? The Pilot has a garbage 9-speed transmission and gets a 3.5. Same with Durango. Lots of issues and it gets a 3.
Here's a couple of proper comparisons where all things are considered.
http://www.motortrend.com/cars/mazda/cx-9/2016/2017-gmc-acadia-2016-mazda-cx-9-2017-toyota-highlander-comparison/
https://www.youtube.com/watch?v=oFV6Ws6Ut20&t=59s
Couldn't you say that every other vehicles in the segment "cheaped out" by not offering Nappa leather (in most cases), real wood, real aluminum, heads up display, premium exterior and interior styling, 20" wheels, and by far the best driving dynamics? Why can't different people value different things. Some people focus on gadget count, others value the more passionate and emotional qualities of a vehicle.
April 2017 sales: Abysmal?
Mazda6 - 2,249
CX-9 - 2,134 (best April since 2011) continues to grow
Mazda6 sales are in much worse shape since mid-size sedans always far outsell the mid-size ute in a line-up. 50% more is typical. It's a damn shame since many consider the 6 the best car in class.