The basic problem is how do you even adress the "user experience" on a chart like this? All you'd end up doing is throwing your personal opinions about the device into the mix, which would ruin the objectivity of the chart.
It's a little like doing car comparisons by mere horsepower and cargo space - sounds relevant on paper, but in reality not so much... the only valuable advice is "test drive them all". In the end your satisfaction with your car probably has little to do with the fact that it has 20% more cargo space than the nearest competitor.