First of All You can't Compare Cell Phone with Ipad as its not a GSM device. Means you can't use as cell phone.
And as for as concern better one it depends on personal preference means some guys like Ipad & they are not concerned with its flaws.
I have found Ipad one of the Simplest device to use so far.
And some people like Android things, as its a device with flash player. And you can do a lot of stuff with Android. & when it comes to android you can get so many brands which are making devices with android.
So IPad is a limited & Attractive Device, and its kind of "Kashka & Showoff" .
Again Personal Preference Matters, I personally Like Android Device, I don't know why but i prefer Android for myself.