The new benchmark is called TouchMarks, which measures measures a given devices touchscreen latency. The benchmark tests the lightest possible apps, measuring how immediately they respond on a given device.

“Apple trounced the competition,”
“Even a two-year old iPhone 4 beat out the other Android devices,” Relan said. “You expect this from Apple’s design team, while others may view their responsiveness as good enough. Now we know why the Android touch keyboard is not as snappy.”
“App responsiveness is judged by how quickly the app can respond to your inputs,” said Rohan Relan, cofounder and CEO of Agawi. “Smartphones with touchscreens that have lower MART scores feel snappier. This is probably why, to many users, the iPhone keyboard feels more responsive than an Android phone keyboard.”
Read more about Agawi and the benchmark results at Venture Beat. Link