Does gas log reflect cty vs hwy epa?

[GasSavers_jkandell]

I'm starting to enter my data into the gaslog, and notice that it's judging me by the epa "combined" score. I drive about 95% urban city driving (lots of lights, heavy traffic etc), so how can I ever get bragging rights against highway commuters? I'm only getting 35 mpg now, but considering that's half city, and hauling heavy furniture on the highway part, it's not as bad as it seems. I wish there was some way for the "x% over epa" figure to calculate how much above a tailored combined score, the way the epa.gov site does.