hmm, just taking a guess, but if you know your best matches are Gemini & Aquarius, and some of your worst are Cancer and Pices, then wouldn't the rest of them be in the middle ? lol ! 
Well yeah but middle ground can be broad, plus, you rarely get a good descriptions of why some signs are more harmonious than others and why it's best (astrologically) to not get involved with someone of the same astrological sign. Like why would a Libra be better off with a Gemini or Aquarius then a Cancer or Picies?
