My WIFI at work really shows the truth.
My old Epic 4G Touch could barely muster an 18mb connection on N setting at my desk. My Sprint Optimus G is pulling 24 most of the time. Also speed test shows my connection at 32-72 down and 30-60 up at work. And yes those numers are what you are reading. I'll post a pic of speedtest.net later.
Even at home I get max speed 3 rooms away at 11.6mb down from Uverse and 1.4 up. My old phone could barely pull half the speed three rooms away.
so from the Epic 4G Touch to this this is way better.