I was lead to believe that "Track geometry" was just something people used to sell cheap frames to eager youth, and that really what makes a bike a track bike is rear-facing horizontal dropouts. After all, some crit bikes have very steep geometry. I was talking to a regular at the restaurant I work at about the bike he rides around, and he said it's got 74-degree head and seat tube angles as well as a full compliment of gears, shifters and derailleurs.
As far as I know handling is not determined alone by head and seat angles, but rather the bike as a whole.