In my case I really really had terrible battery life, lasting just 4 hours on standby with minimal use. It reminded me of the times I had G2X.
In my case the thing draining the battery was email syncs. 2 POP, 1 IMAP
When I turned email syncs off, on heavy use, it lasted 8 hours. On moderate use it lasted 10+ hours, the whole dam day. It was like Jekyll/Hide. I was shocked.
The compromise was I enabled email Syncs every hour. Sometimes it drains my battery. Its those background apps kill your battery life.
Don't have graphs but this is my experience so far. Nexus 4 had better battery life with loads of email accounts for me. I was beginning to regret the Nexus 5. Now its fair. Can't complain.