Screen- only if you compare the iPad 3 to all of the sd android screens. Compare it when the hd screen transformer prime drops. Then we'll talk. Until then, you're talking apples to oranges.
Stylus response- come on. Do I really need to go there?? I mean why do you need a stylus. This is made to be touched. And this only counts if you are using the same exact stylus on an android tablet and an iPad. I've done both and there is no difference.
iTunes university- you're right. There is no iTunes university. There is not even any iTunes. In fact, it doesnt need iTunes at all. Not to transfer music, files, movies, or any of that. Matter of fact, you can use multiple music programs for music with a lot better eq programs than are available on the iPad (poweramp, double twist, google music)
Better casing- this is also a matter of opinion. I've used the Samsung galaxy tab, and that is one extremely well built tablet.
Accessories- you are absolutely right here. I'm not even going to argue with you. It's sad really. Lol
iTunes apps/sale free- I agree and disagree at the same time. What I've seen is that most free apps aren't really free on the iPad. Most that are free actually have an in app purchase to unlock features. For instance, google voice apps, they are free, but need a 1.99 in app purchase to unlock text message functionality, or video calling functionality. Or Craigslist apps need a .99 in app purchase to give you push notifications, and to save searches. Android doesn't trick u much with this. Either it's free, or it's not. And you forget about the amazon AppStore that has free apps daily.
I say all of this to say the iPad is not hands down the best tablet. Neither is android. Both have flaws.