The entire jelly bean update is about improving the user experience on Android, so Googles obviously heading in the right direction.
With something like Project Butter, which was really something that was never needed in iOS because the back end architecture on the GUI isn't as inherently flawed as it is in Android.
People can go back and forth on stuff like this all day and we'll just be chasing our tails. There is no right answer about which OS is "better". They are both are good. The answer of which is best is going to vary from person to person.