We measure the power consumtion at the power plug, so the power brick adds into the equasion. Therefore, you cant just take the battery size and the power consumption and calculate the battery runtime.
Your numbers for the battery and current consumption don't seem to add up. Given a 5.45 Wh battery and minimum consumption of 0.4 Watt ("the lowest possible result") I somehow can't quite figure out how you ended up at 22 hours.
Given a basic formula for battery life where Battery Life = Watt Hours / ( Voltage x Current in Ampere) or in this case Battery Life = Watt Hours / Watt I don't see how you get 22 out of 5.45 / 0.4. For that to work you will either need lower power consumption, e.g. 0.2 Watt, or a larger battery..
Don't get me wrong, I'd love for it to be the case, but I think it is a little too optimistic in reality. I'd guess we'd have to wait a couple more years to get that kind of battery life. Same goes for the wifi life of ~16 hours, which is well above the ~13 hours you would get at 0.4 Watt consumption (unless of course that is not the actual "lowest possible result").
It's a... smartphone. With the iPhone 5, Apple has introduced the sixth generation of its smartphone family. The Retina display now measures 4 inch, the case has been redesigned, and the new Apple A6 chip provides a boost in performance. NFC, the widely used 720p screen resolution, or a carrier-independent LTE module are missing. What does Apple have to offer for a starting price of 679 Euros, and where does the California brand lag behind?