To add to my original statement about the framerate, it is nearly perfect on multiplayer (which, for me, matters the most when it comes to the framerate), which is awesome. I'm still in shock this finally made it to the platform, as I have been waiting for a modern combat port since windows phone 7 (restricted by GPU restraints and no native code porting). As I said before, this has definitely solidified my confidence in the platform, and I'm a lifer now. I wasn't going to switch anyway, but seeing so much support in the past month has just been amazing as a windows phone user.
I've also noticed that I'm more forgiving when it comes to experiencing bugs and little annoying missing things (like VPN, lack of NFC payments, Xbox music issues, etc) because seeing developers care about the platform reassures me that Microsoft darn sure will, and listen to user feedback for improvements and features...