promitus, there is absolutely no way you can determine potency. if elephant is so great, and im assuming you are basing your "potency" on the smell, a skunk strain would be WAY smellier than that so called "elephant"
you also say your friend only grows BC seeds strains, then he is a dumbass and probably doeesnt have a clue what he is doing. i bet if you bought a 10 pack and grew them all out, they wouldnt even be the same strain.
im not harping on you, just telling you why you are getting made fun of. on this site we view BC seeds as a joke and a hoax. because, as growers, we know better.
also we have common sense. something you apparently have none of. if you need someone to tell you what common sense is, just ask. we would be more then pleased to help you with that definition.
now if you have any growing questions on how to better your grow, feel free to ask. we wil help you with that. but, and i speak for several RIUppers, do not like when people, meaning you, crowd up the forums with nonsense we already know is false information.
good day
EP