We already told you how, despite steadily picking up his pace of campaign spending, City Comptroller Bill Thompson still lags far behind Mayor Bloomberg. But sometimes, things like this are better understood in graph form, because the stark disparity is just that much clearer, and because graphs are colorful and fun. So we made one, and threw in City Councilman Tony Avella who has so far spent $202,000 just for the hell of it.