Hi, everyone!
I suggest to add win/loss ratio to user info according to clan wars victories and losses.
For example, if user wins the same level (same TH) enemy with 3 stars he gets 1.0, 2 stars - 0.5, 1 star - 0.2, no stars - 0. If user wins the high level enemy with 3 stars he gets 1.2, 2 stars - 0.7, 1 star - 0.3, no stars - 0. And do not count anything if user wins the low level enemy. This ratio may be global and for the last month or week. These values should be rereviewed to get the best ratio showing who's a good or bad warrior, that is just an example.
Thanks!