10 weeks should be long enough for WW. After a cure it might have more punch. And potency is mainly determined by genetics so it could just be this one plant wasn't that potent, another plant even from the same pack of seeds might be more potent. You have to realize that in the dam, if you buy something from a coffee shop it's probably from a really good clone of that strain, and not every seed will give you the same phenotype. At least you have some smoke and some experience.