2011 MBP 15", seems about the same with all native OSX apps. Did an upgrade from Lion (10.7 was a fresh install), running most of the usual suspects as background apps.
My Parallels 7 + ML actually seems much better (but that could be mostly PD7 vs. PD6, upgraded right after L>ML).
I using gfxCardStatus (v2.2.1), with a power based trigger (battery = integrated, AC = discreet).
I'll have to monitor the wife's machine (2010 MBP13), also upgraded, but she's like me, mostly docked with AC power.
Cloud services running, all the defaults for Notification center, etc., nothing really tweaked towards lowered battery use.