That image is a result obtained by some traffic analysis study made by the fine folks at OnSwipe. OnSwipe is a technology aimed to optimize the web browsing experience of any website on modern personal devices like tablets. It’s so cool that it was also been adopted as a plugin option here on WordPress.com (even if now that is fading away).
Now back in topic. Even if the iPad(s) are between the 62 and 68% of the tablet market out there is simply impressive that the 98% of the web tablet’s traffic it’s made from that device. What are the other 32/38% of tablets doing ???