I don't have a reference off hand. I have most of my old biology books at my mother's house, but I believe in teenage girls, brest development requires estragen, progestin and prolactin. I've seen guys run tren-only cycles at 200 mg a day, but without an AAS that is a substrait for the aromatase enzyme in the stack, and never even develop puffy or sore nipples.
No offense, but you are using a fuck load of test (750 mg a week), but only 400 mg of deca and you think prolactin is the culprete and not estragen??? 300-400 mg of test a week will bloat me and give me puffy nips (if I don't use nolvadex) even on an aromatase inhibitor. I've used 600 mg of deca by itself and did not have any signs of gyno. I've also run tren only at 75 mg a day for 20 weeks and never develepedpuffy nipples or lumps. You are using twice the test it takes for me to get gyno. Granted everyone is different, but 400 mg of deca is simply not enough to elevate prolactin levels a great deal, and winstrol, even at 10 mg a day seems to remove side effects from tren and deca for me personally.
You should also consider that winstrol reduces shbg levels, and 100 mg a day would have a huge effect on this. So your free testosterone is much higher than it would be on 750 mg of test if you were not using the winstrol.
The original advice still holds IMO.