I have smoked 2 pork butts on my Traeger smoker. Both turned out with great flavor, juicy, and tender. My question is this: This weekend we had dinner with some friends and they had smoked a butt too. Again, it was great, juicy and tender. Theirs was a much lighter color of meat than mine 2 have been. His was smoked in an electric smoker, but I don't know which brand. What could have been the difference?