Originally Posted by
Boss Moniker
If you think about it, riding on the horizontal section of bullhorns, road drops, or even track drops gives you the same exact position as flats, although often narrower. Risers do have a rise, but that's the kind of adjustment you should be making at your stem.
Flat bars of the same length allow for a lot more leverage than drops or bullhorns.
Also, you can't get much sweepback in drops.