Is There a Difference in the End Result Between Air Frying/Baking Food at 300° F For 10 Minutes and 375° F For 8 Minutes?

This might be a stupid question, but is there a difference in the end result between air frying/baking food at 300° F for 10 minutes and 375° F for 8 minutes? Edit: I should always pre-heat my airyer and oven? If not, when should I be doing it? submitted by /u/BWJackal