That is very strange! I literally just went into the DVC online booking system, and selected HHI for check-in 3/5/2016. In the "Room Type" drop down, I am only given four choices: Deluxe Studio, 1 Bedroom Villa, 2 Bedroom Villa and 3 Bedroom Grand Villa. I do not have two choices for 2BR, as you say you are getting. Maybe it has something to do with the browsers we are using? [FYI I am using Internet Explorer.]
When I select the room type 2 Bedroom Villa, the description is for 1 king-size bed, 2 queen-size beds & 1 queen-size sleeper sofa.