In my opinion, if the cradle thing is a joke, then the phone I'm using is a joke. A higher end Samsung or iPhone smartphone can run any app and therefore perform all the functions of the Android tablet that is installed as an aftermarket unit. The screen is not as large, but that doesn't bother me at all.That cradle thing was simply a joke..
I have an Android head unit, and I have an Android phone. My most recent apps and updated apps are on my phone, and I don't have to worry about downloading my fav apps a second time on an Android head unit when I use my phone. My phone is more up to date than the head unit in my smart because I can only access the Internet through hotspot that comes from, ironically enough, my phone.
If you prefer a larger screen, I have no complaints. I'm a fan of both. I'm just trying to weed out the difference between needs and wants. I never felt like the a problem, although I certainly respect your preference for the larger touchscreen.