Its growth hormone which gives the wide jaw not testosterone.
See
http://www.pituitary.asn.au/Portals/0/P ... t%20A5.pdf
Testosterone raises growth hormone but not enough to change bone structure.
You can have high testosterone but high estrogens aswell which will dim the masculinizing effects of testosterone.
btw Testosterone mostly only works on muscles and its DHT which is the hormone which works on skin, hair, voice etc. The reason all the concerntration is on testosterone is because it is the main precursor male hormone, without testosterone you wont have estrogens or DHT, and its the abused substance.
Comming from someone who is on testosterone replacement, you cant look at someone and tell if there testosterone is high or not, some examples are lance armstrong I would assume cause he was an athlete hed have high testosterone but its not the case, also I was a lil shocked to hear of someone here who had testicular cancer to still have male pattern baldness early.
DHT at 4 for one person can be the same as DHT at 2 for another, everyone has diffrent levels of hormones thats normal for them, alot of other things factors into it such as amount of androgen receptors, and estrogen levels.