Is anyone getting half the battery life on Mavericks vs. Mountain Lion on Air 2013?

I bought the air 2013 a couple weeks ago and when it was running mountain lion the battery meter would tell me I have 12 hours of life with full brightness. After installing mavericks yesterday the battery meter is telling me 6 hours of battery life. The only program I have running is chrome. Is it just a matter of waiting for chrome to become optimized for mavericks?