An edit that probably would've made the Dark Knight a much better film

I recently had a theory that has since been broken regarding what if Batman purposely saved Dent instead of Dawes when the Joker threatened to blow two places up.
It would've made the scene more interesting having the audience guess the possibilities and the characters actions.
However, there is an unneccesary 10 seconds in an already long film, where Batman tells Gordon where each of them is going. If that had been edited out, it would've been a much better, more interesting film.