To be sure, he richly deserves to be piled on. Congressman Todd Akin (2nd MO-R) insists that women have a natural defense against conception during rape. This is something that would be impossible to test in a controlled laboratory study. Scientists cannot observe fertile women while they are being raped to confirm Akin's hypothesis.
An egg cell does not care about the circumstances behind fertilization. It can be removed from a paid egg donor, introduced to sperm inside a test tube, then implanted into a mercenary surrogate. The people who intend to raise the child don't even need to be in the same building. Emotions like love and fear are not a factor here.
This type of thinking is what happens when one's ideology clouds one's beliefs about the real world. This is why some conservatives want intelligent design taught in biology class and progressives want it taught in economics class.