Buster Heine from Cult of Mac switched to a Google Nexus from an iPhone 4S after having Joe Brown from Gizmodo on their Cultcast the other week. They were talking about iOS 6 and how stale it feels and Buster thought he'd try out an Android phone to see what else was out there. Note, this wasn't because he was 'sick' of iOS, but because he thought he owed it to himself to see what else was out there, even though he prefers the iPhone.
His recent tweets, and he's not biased, state what has always been my number one problem with Android; responsiveness of the touch screen.
"Jelly Bean's new "I Can't Believe It's Not Butter" feature has made some huge improvements for my Nexus' touch responsiveness".
But ...
"Still not on par with the iPhone, but getting closer. That small lag in responsiveness is the most repulsive part of Android phones".
It's the one thing I've always noticed straight away when trying out demo units or friends units when it comes to Android devices. I've no idea why they cannot replicate the 'instant' responsiveness of the iOS device screens.
Android wasn't designed for touch screen, it was designed for physical keyboard and they added it in later and the programming got all jumbled, and therefore there is lag, I could get more detailed, but just google it. lol
Basically they need to redo the Android programming to fix the issue.