what guat said is definitely true
i have a tendency to put on mass very easily, unfortunately not all lean, and i'm not that tall.
i know people that can eat whatever they want,and still have a 6 pack, perfect skin,etc. I am not one of them
it just means we must work much harder,that's all. I neglect my nutrition, and have learned the hard way that aas will not automatically put on lean mass and keep the fat away, at least for the majority . Even tren will not make you ripped if you're eating pizza,soda and hamburgers and french fries all day
aas definitely can work wonders, and will put mass on you, but diet is massively important for actually looking good