This is a quote from Chef Jimmy J.
"Pork Tenderloin should NEVER be made into Pulled Pork...But...There are people and Q Shops that want to eat or sell, very " low fat " Pulled Pork so they will smoke" Loin " to 205°, falling apart, like any muscle, it will get there eventually. The problem is, Loin is so lean and low in collagen that the result is stringy and dry and has to be mixed with large quantities of thick BBQ Sauce just to be able to choke it down.
So, while Loin can be made into Pulled Pork, it is pretty bad and not really edible if you have had even marginal PP made from Butts or Shoulders...JJ"
Al