Thanks for the information and regarding 1-2 weeks for the battery to be seasoned is based on physics which is the battery cell just like car engine, you will need to run in first when new.
I have been using Sony phones since the Ericsson times and their battery are same throughout which require charging for 1-2 weeks, Android is not available at that time.
Yes, they can have their Camera department but I only believe in precision engineering or refinement. Talking about their camera, you can have a try on their dedicated camera or even the Galaxy Camera comparing the quality with the Sony Cybershot low end camera, you will see for yourself the photo quality difference not just comparing the phone camera.
From the link provided, I can see that the New NAND Chip will be brand under Toshiba which Tablet Z is using so the older chip is still brand under SanDisk which Xperia Z is using.