Source : the link you posted
The promotional campaign, which originally centered on women, also targeted the gay community after it had been made clear that there was a strong interest among them.[44] Warner Bros. enlisted entertainment marketing agency the Kartel Group to market the film to gay men.[44] Website AfterElton.com noted that gay men could not connect with the first trailer as the film "was marketed as a romantic comedy" through Tatum and Horn's relationship, but that it changed when the camapaign also focused on "the male form part of it [the film]" through a red-band trailer (the fourth one).[44] In June 2012, a Magic Mike float was included in the West Hollywood gay pride parade and in other gay pride events such as in New York and in San Francisco.[45]
"Lets target it to women ! ...wait .. women don't care ... but men love it ! main target : gay males"