True, but kinda apples to oranges. One is a steroid the other is a weaker precursor. Anyways, I would not suggest 3AD for the original poster since he is 6' @ 170lbs, kinda pointless you aren't big enough to need it yet, keep it natural till you hit a growth wall.
Some good supps for you to check out:
-Beta-Alanine
-Cissus
-Creatine
- Scivation Extend (BCAAs)
-Fish oil caps (take 6 grams a day)
- Any natural test booster (ex: ActiVate Extreme or DRIVE)
Try a couple of those, eat, and you will grow.