All of the rankings base their methodology on something slightly different. Before we get all upset of what school ranks where, just look at their methodology. If it matches your criteria, then use it when looking for the school.
There is so much wrong with just looking at the numbers in rankings. It is a self-fulfilling prophecy. Everyone wants to go to #1 school, so HSW, will get the best applicants. Since they get best applicants, they will be most competitive. Since they are most competitive and yields will be high, GMATs will be high, admits will be low, and they will continue to rank high because thats what the ranking is based on.
I dont particularly care for 1 rankings system over another. I probably would go US news as well (based on my own criteria for school selection), but knocking the others rankings agencies is silly. Who cares where they rank you. Use the rankings system that aligns with your goals. Make your own ranking system. We are all smart and want our schools to do well, but lets not criticize FT for their criteria selection. Its their magazine or blog or whatever, let them do what they want.