This happens to be one of the reasons that men don't fall more easily into pornography addiction, but it also means that what you consider severe inadequacies are really not as severe as you think. Your complex about being overweight is more unattractive than being overweight.
Yes, your weight matters, but freaking out about your weight is much less attractive to a man than a few extra pounds.
There are limits to the above-described phenomenon.
While it is difficult (if not impossible) to quantify "a certain point" in terms of weight or even BMI, I can say this instead: women like Nicki Minaj are pushing the limits already, and are able to to do because they have great proportions.
At most, it is a reliable source of advice for women who want to improve their chances with the opposite sex.
When it comes to attracting men, your physical fitness matters - a lot.
I've dated countless women and it has always amazed me how little they know about men.
If nothing else, this blog is an outlet for voicing my astonishment at the typical female's ignorance of the male mindset.
Furthermore - and more importantly - a woman in the flesh is far more real and immediate than a woman on a screen or the page of a magazine, and this immediacy translates directly into sexual power.
In this sense, the advantage that the "girl next door" has over these "fantasy girls" is huge.