Nice broscience man

Those perfectly tiny lil nips, a test cycle has moderate likelihood of making the male nips look really puff and grow in overall area. This moderate likelihood moves to near guarantee when the user is pubescent - many healthy pubescent males present some mild symptoms of gynecomastia simply as a function of their natural increases in testosterone, he'd basically have to be taking a normal physiological dose of test for this to NOT happen.

Or... be a non responder to e2. It's not rare.

Full ass head of hair in both pictures...androgens visibly increase balding rate, see bradley marten with his hat off.

He was like, 17-18 in this pic. Even mast wouldn't make you bald at that age.

Chest/delts/traps, while obviously better than the average DYEL, these 3 muscles in particular should be stupid big if he were on cycle. His delts are uncapped, barely bigger than his biceps, and his traps are simply not big at all (granted, low front double bicep doesn't emphasize them well). As soon as you jump on, your traps blow the fuck up whether you hit them or not, and your delts and chest are typically the next pieces to follow.

The pose he's doing hides his traps and delts. Look at Arnold in a similar pose and you can't make out his delts or traps either.