Those figures are incorrect for tablets, and ignore the number of Android tablets that are little more than web browsing and email devices.
They also ignore the huge number of screen resolutions and mfrs tweaks.
From our own perspective we have given Android dev away. Too many devices to test against for optimum performance, and within 3 weeks app was pirated on several Android app stores and on one had a Trojan inserted. As our app is technical and reputation rides on it, we killed it outright.
We now only develop for iOS. Your experience may be different, but I’d recommend thinking on it.