Blanchard supporter Anne Lawrence writes the following about the autogynephilia category:
"For heterosexual men, the preferred erotic target is mature women, an erotic preference called gynephilia. According to the model proposed by Freund and Blanchard (1993), some heterosexual men who experience erotic target location errors for their preferred erotic target are also sexually aroused by wearing women’s clothing or by otherwise temporarily attempting to resemble women..."
Lawrence presents a table of "target location errors" (click on it to enlarge):
It is a fascinating table. Pedophilia (attraction to children) is as "uncomplicated" as gynephilia (the desires of normal straight men), while autogynephiliacs are grouped with those who desire to amputee one of their limbs (!).
Group 2: Homosexual transsexuals
"Homosexual MtF transsexuals are not sexually aroused by the idea of being women, but instead seek sex reassignment because they are, as previously noted, naturally very feminine on many physical and behavioral dimensions (Blanchard et al., 1995; Whitam, 1987, 1997), resulting in the prospect of greater social and romantic satisfaction and success after sex reassignment than before. Natural resemblance to the status they want to attain (i.e., womanhood) thus provides an obvious explanation for homosexual MtF transsexuals’ desire to undergo sex reassignment."
In one way you can say that they change into women to get laid.
It seems to me that Blanchard and Lawrence accept neither homosexual transsexuals or autogynephiliacs as women. They remain men in their view, both before and after the surgery.
Man: a complex set of variables
Here's a relevant quote from the New Scientist:
"Everyone knows tall parents tend to have tall children, and recent studies of the genomes of 30,000 people identified about 50 genes associated with being tall or short. Yet together these genes accounted for only about 5 percent of the inheritance of height."
If the genetic causes for height are this complex, it is reasonable to believe that the causes for sex and gender are equally complicated.
Blanchard would disagree, and argue that being men we know nothing more about women than other men. Many transsexual activists would in one sense agree with Blanchard on this one: only women know how women feels, and the only real women of the transgender community are the genuine transsexuals: women trapped in men's bodies, not fuzzy borderline people like the autogynephiliacs.