In the information windows from your Clan Castle you can see, for example, War wins: 15.
Okey, new people in your clan can say: wow 15 wins in war, you are the best guys!. But the reality can be 15 wins from 25 wars made (15 wins and 10 defeats).
My suggestion is change the appearance of that option.
Now: (4 wars wins but how many wars have did this clan?)
http://i62.tinypic.com/1z1s7l5.png
My suggestion: (3 wars wins from 4 wars made)
http://i57.tinypic.com/16h0owp.png
* Sorry for the screenshots, they are in spanish.
