While what these women did was definitely noteworthy, they didn't dominate the news the way I think a "Man of the Year" ought to.
Two guys dominated the news for nearly one month, to the virtual exclusion of any other stories. Fox, CNN, and MSNBC provided 24/7 coverage of these two; they kept campaigning politicians out of the news and off the airwaves; they may even have played a role in the defeat of Kathleen Kennedy Townsend during the Md. gubernatorial race.
I nominate John Allen Muhammed and Lee Boyd Malvo as Time's Men of the Year.