What our record and place in the standings may be with a different QB is all speculative.
All we can do is state facts. Here are a few..........
With better QB play, our offense would be better. Thats an obvious one.
With a better offense, we would score more points. Obv again.
Andrew Luck is a superior QB to Tannehill. Obvious to most people.
If we had scored more points, our record would most likely be better than 5-7. How much better is speculative.