What pros have NIKON 1 J2 over Sony NEX-5N ??

Hello!

I need your advice! I am considering to buy mirrorless camera. I want to purchase:

Nikon J2
or
Sony NEX-5N ?

Sony has good, big: APS-C (DX) format, 16 MPIX sensor (probably the same like this in D7000 and D5100 DSLRs). Nikon has much smaller... and only 10 MPIX.

Nikon has good 2.7 crop (which is good for me). I also have Nikon lenses, so I could use them (with adapter) with J2... Nikon has faster AF. What else?

But honestly, which camera is better? What advantages has Nikon J2 over Sony NEX-5N? (prices are almost the same).

Thanks!
Regards.