I seen a pic of the iPhone 5 run times...and it does list 8 hours for LTE web browsing. The RAZR Maxx might be between 5-6 hours. BUT....talk time goes to the Maxx by a country mile. I think overall....the Maxx has better battery life.
iPhone 5 battery stats:
AnandTech - The iPhone 5's A6 SoC: Not A15 or A9, a Custom Apple Core Instead
RAZR Maxx battery stats:
AnandTech - Bench - Smartphone11
Motorola DROID RAZR MAXX specs
Talk time, stand by time, wifi web browsing goes to the Maxx. LTE web browsing goes to the iPhone 5. 3G web browsing is a tie. Thats if all these numbers are accurate. I trust Anandtech and Phone Arena numbers. The U.S. GS3 so far is listed as the best Android phone for LTE web browsing between 6-7 hours...I have a feeling the Maxx HD will beat that.
Which makes me wonder how Apple can get 8 hours LTE browsing for the iPhone 5....and fall short everywhere else... And 3G browsing to be similar. Maybe no Flash? lol.
And I just noticed something...the GS3 is running at 1.5 Ghz. Under clock it to what the iPhone 5 is running at and maybe it will be 8 hours too......assuming the iPhone 5 is running lower than 1.5.