What widgets do you have running? Do you leave wifi on all the time? How about GPS? How much time is the phone awake (screen on, being used)?
I take my Moment off the charger at about 8:00 am, and plug it in every night simetime between 11:00pm and midnight. Some evenings, i'm "in the yellow" (15%), some evenings I'm still "in the green" (above 15%).
My phone checks an IMAP email account ever 15 minutes, and I have google push email. I use facebook and twitter quite a bit, as well as the web browser. Usually have about 30 minutes of talk time every day too.
-SF