Women Judge Testosterone Levels and Child-friendliness by the Face

Here's a rather interesting story. Apparently women can judge whether a man has a high testosterone level or if he will be good with children just by looking at him. If a woman is merely interested in a fling, she will tend to choose the guy with loads of testosterone, but if she is interested in settling down and starting a family, she'll go for the child-friendly variety. Read the whole story here.

What I want to know is---are high levels of testosterone and child-friendliness necessarily mutually exclusive?