Wing t

The reverse pivot allows for the QB to hide the ball from the defense & allows for a smooth play in the sense that it's all timing based & rhythmic. QB's that open directly to the dive/belly usually can read the DE and turn the dive/belly into an option off of what he reads. It allows for 2 plays in 1, instead of having to call in the option play if he reverse pivoted.

Both are successful, just matter of what type of wing-t you're using & your philosophy using this offense.