One has to understand that Women, Supreme and Women-Direct all share the same office and operate under (basically) the same company. The only difference is that each board has their own bookers, space in the office, and "image" but the Women Group is the 'umbrella' company.
Women Direct was initially started to be the much more commercial sister agency in the Women group, but one of the founding directors/bookers of the agency (who has since left to New York Models) tried to make it become something much more editorial, almost in an attempt to rival Women, by signing girls like Alla and Dorothea and subsequently pushing them into the editorial / show market, where they reached a high level of success. Women Direct was also established as a place for models who didn't fit the 'Women' or 'Supreme' mold / image but were still viable, high end (read: profitable) models previously placed with Women or Supreme -- such as Timoxa, Luize Salmgrieze, Svieta Nemkova, Irina Vodolozova, Luisa Ingman and Melody Woodin. All of the boards are separate though meaning, Supreme is not the development board of Women, and Women Direct is not where Women models go when they aren't working as much editorially... etc.
Essentially it's all about image. It was explained to me like this: Carmen Kass embodies the Women side of things, as a timeless, classic, elegant, editorial beauty. Iris embodies Supreme, as a quirky, intelligent, unique, contemporary beauty, and Fernanda Motta embodies Women Direct, as sexy, commercial, high end money model.
Make sense?