Apple CEO, Tim Cook, griped about Android tablets in his keynote introducing the new iPad.
He gave two examples, Twitter and Yelp, and compared them side by side on iPad and Android tablet (presumably the Samsung Galaxy Tab). He is right on the point, but there are not just these two. Many apps on Android tablets is just a stretched out version of its Android phone version, which already looks worse than its iOS counterpart.
Twitter on iOS
Twitter on Android tablets
Yelp on iOS
Yelp on Android