You'll probably find that if they guys that are doing 16 exercises per body part are getting much bigger than you, they are either blessed with VERRRRY good genetics, or have quite a different outlook outside the gym as to what they are going to put into their body each day... In about 95% of people that train, that many exercises is just to much for any body part, and to get through them all you couldn't give every one of them 100%..

All the magazines i've read say if you want to be the size of the pro's, do as the pro's do, and then they give you this huge routine that contains about 50 different exercises to complete over your 5 day in a row training schedule... What they don't tell you is your doing about 10% of what the pro's do, so you'll never get to the size they are without the other 90% which is over $1000 every week on "heavy duty" supplements, steroids, hormones, and whatever else they can squeeze into their drug filled bodies to give them that extra few millimetres of muscle...
For 95% of the general public though that do not partake in this extra corricular activity, about 5 - 15 different exercises all up for the whole week is optimum for building large amounts of muscle.. of course if you want more muscle & your putting in the work, you just need to eat MORE good foods than you currectly are...
I'm just a big beleiver that pushing your body & muscles to their absolute limits on 2 big exercises is just as effecient as working your way through 6-8 exercises.... And I don't really mind if people still stick to the idea of needing to do a tonne of different things to build their body, I just get to go home from the gym an hour earlier than them and spend my time doing other things I enjoy..