cromepista - i think your thinking is not taking in to account the effect of headtube angle. a bike with a steeper headtube angle (your track bike, probably) is going to require less rake in order to achieve the same amount of trail as, say, a slacker road bike with a more raked fork.

you can have two bikes with the same amount of trail, and they'll differ in headtube angle and rake - this will also affect the handling.