Nokia is joining the big leagues - literally - with the supersized Nokia Lumia 1520.  The first phablet to run Windows Phone 8, the Lumia 1520 sports a 2.2 GHz quad-core Snapdragon 800 CPU, 6-inch 1080p HD display (367 PPI), 2 GB of RAM, 32 GB of internal storage, a 3,400 mAh battery, 4G LTE connectivity, and Windows Phone 8.  It's an AT&T exclusive and it's available for $199 with a two-year agreement.  While the hardware is larger and the internals are poised to compete with Android, the phone is very similar to other Windows Phone 8 devices on the market.  Is a big screen and updated internals enough to make this phone stand out?