None of that has anything to do with carriers and manufacturers not supporting the phones they're selling on contract. LTE is not a function of Android, it's a hardware issue. I'm not sure what you mean by "smoothness." The number of apps has little to do with what we're talking about either (though I bet if you ask a developer they'd say it's easier assuming 93% of people have the latest OS than it is having to account for 33% using the OS from two versions ago) and market share has nothing to do with it either. Apple is way, way better at supporting their product by updating software than a vast majority of Android devices. Unless you're buying a Nexus or GE Android device there's no guarantee that you'll get OS updates with Android. I have a tablet that's less than 9 months old that won't be getting anything 4.3 or newer.
You can argue other points as much as you want and while it's good news that the percent of devices that are running JB (even if it isn't the latest version of it) is going up, you can't argue that 40% is anything but terrible compared to the competition.