You know, all those calorie listings are averages... So being exact really isn't possible... But it's still kind of a thrill when a nice round number comes out.
Just as with scale readings, don't let the numbers totally rule your world.
And you are right! Maintenance does not mean pizza and beer. Now I know a lot of members will jump right on and say, "Oh, but you can plan to have pizza and beer as long as you fit them with your program"
But from what I've read on 3FC, it's easier just to forget about them for a long time.