No clue why anybody in the late war main arena would want to go to the dueling arena to settle something started in the late war main arena.
The fuel burn being 1.0 guarantees a 110 can climb to 30,000 feet on 25% fuel and have minutes to loiter or a spit XIV can fly from one end of the map to the other and almost all the way back on 50% fuel.
Airplane fuel loadout is just as important a choice as anything else and the dueling arena removes this important facet.