I dunno. Talking battery life on Razrs and Maxxs reminds me of when we used to discuss MPG on lifted Jeeps.
One guy saw no effect the next guy claimed he was losing half - never any rhyme or reason.
It all depends how the phone is set up. EVERYTHING in the phone uses battery. Some apps use more battery than other apps. I turn off everything in my phone that might eat battery. I don't use wifi or GPS or anything else unless I need it. I have my phone underclocked, and I set it up to use less CPU as the battery gets to different levels. It has been off the charger for 4 hours now, I have been on the internet, posted pics to Facebook, been on Twitter, and made several phone calls and I am still above 80%. It's all in how it's set up.