My Anker 2.4 charger did 40% in 45 minutes yesterday, pretty quick. That's with the stock cable, which I'm pretty sure is a 3.0A cable, given its build.
My phone drained itself to 8% last night though, from 86%, doing Account, and Start screen processing, both of which had 0% background (they're not set for background processing at all) use, yet they drained the battery, almost exclusively (I'll probably start a separate thread). This is the only time I've had such a dramatic drain, I've had some higher-drain experiences, but nothing like this, when it wasn't being used at all. Clearly the battery meter is really hosed in the AU build that's out there.
Oh yeah, and that was WITH battery-saver ON, hmm... ;-]