While I agree that it will not be a perfect method for determining how good a pilot he is, as a general rule in life the more someone does ANY job the better they become at it. So it will certainly only be a guide but of course I would choose the more experienced crew as on the balance of probability they would perform better in an emergency situation.
As another example, if you were having brain surgery, do you go with the surgeon who has been doing it for 20 years or the guy who has just graduated from med school?