I see a few airlines which operate both aircraft while the best business models suggest that a single type aircraft airline has the most success. My question is which aircraft is more productive? To be more specific, If you run both aircraft on similar routes which one is more profitable? I understand you have different variants of each so I assume the most similar aircraft models. For instance on a flight from Phoenix to Columbus with 120 pax which aircraft arrives first, burns the least fuel, has the least maintenance issues etc.
I am just curious and not trying to start a Boeing/Airbus row.