A lot of things factor in pulling off the shaved look though, but one big factor is having good occipital and parietal bones to give the back of your head a nice even looking shape, instead of bulging lumps that look odd from the sides and rear. Interesting article though, but nothing surprising. It all depends on the individuals height and physique that factor into whether or not they appear to be tougher or even more appealing.
The bald and overweight guy will always be the butt of the joke for society and nothing is ever going to change that so, if you're not overweight then at least you won't be targeted as much. I recently saw these commercials and couldn't help but laugh, because I just think of the process in the creating of those commercials. The way they always depict the bald guy as the bad thing and usually persuade you on what you should do to avoid the bad thing. For instance,