The stats were compiled using clickthrough guestimates?
The chart is misleading because the contracted y-axis suggests a disproportionate price difference between Apple and the rest and a weird average: if Apple is selling most devices then the mean should be closer to Apple's price.
The conclusion is at odds with the other's analysts: Samsung and Asus are picking up market share through higher value products. How long before Apple starts suing Asus?
Demand for high-end components is keeping prices high. Cheaper tablets are still only possible with lower spec. Apple has the first-mover advantage with a high-quality product. Wannabe's, at any price, have to have to be good enough in the criteria important to buyers, which are sadly missing from the "analysis".