So you didn't get widgets or WiFi or Bluetooth or Cellular toggles in Notification Center. That doesn't mean this isn't a big update! Dumping Google Maps for your own, in-house Maps.app built from the ground up is a pretty big deal. Passbook has potential, especially with (possible) NFC in the next iPhone (or some other, maybe location based, system.) And if you've used iOS 6, in person, (and it hasn't been too buggy, runs smoothly for me) using iOS 6 feels different. I know it sounds cheesy but it does feel like a different OS. It's pleasant to use.
If you're still hung up on iOS 6 being called iOS "6" instead of iOS "5.2" consider this: Every year since the original iPhone, WWDC has been the place where Apple released the next OS update (from 1.0, to 2.0, to 3.0, etc. etc.) Why would they change their whole OS upgrading and naming scheme now?
Google's JB seems nice, but it really doesn't add much (save for Google Now which I think is awesome but creepy) so it doesn't merit a whole 1.0+ OS update.
Just relax. iOS 6 will be awesome, and Jelly Bean will be awesome.