In my experience, most of the time if the battery is draining faster than you think it should, it is due to push notifications. Go in and turn them off except for the ones that you must have. Note that you must turn off notification center ad well as turning off everything else (no alerts, no badges, etc). See if that helps it. Also, it seems that I've had another issue with push notifications since they were first introduced: it seems they get hung or something and continue to drain the battery. In order to release it, I have to force quit all the apps and reboot the phone. That seems to work for awhile, but it usually comes back (words with friends and Skype have this issue for sure. Others do too as I think it's an apple problem and not necessarily an app problem).
One other thing that seemed to drain the battery when the 4 or 4s came out is the time zone location service (settings...privacy...location services...system services). Turning that off helps if your location arrow comes on and stays on a lot. Good luck!