A good question and not one i'm qualified to answer...but...i would think so. Light is food. Food creates growth. Growth creates resin. It may not be directly connected to resin and potency but if the plant doesnt have enough food, i would think that potency would also suffer a bit. I doubt that, once you get to a certain intensity, it is going to be a noticeable difference but i imagine not having enough will effect the potency. Like i said im not qualified to answer but just thinking from the top of my head. Love to hear more qualified and experienced answers!