That ain't necessarily so. A high BC is great, but it often comes at the cost of a lower initial velocity. When you're talking handguns, most of us aren't shooting them at distances great enough for that higher BC to overcome the initial velocity advantage of the lighter bullet.
Whichever bullet has the shortest flight time will have the least drop. Ussually this means that light bullets with high initial velocities and low BC's will have better trajectories at near to medium range.
Short bullets have a greater stability. That is why longer ones need a faster twist. Also bullets with the most weight at the outer edge rather than the center are more stable. That is why hollowpoints are almost always the most accurate.