**Rules**
To adequately compare soccer players, we have recently developed our original algorithme that takes into account several factors, such as achievements of individual players in each game, achievements of their teams and strength of teams against which they play.

All teams from the strongest league of each national championship are ranked according to the results of last championship and all calculations are based on TEAM POSITIONS in the ranking. Currently, we compare players of the four strongest European soccer leagues according to the UEFA soccer associations’ ranking, i.e. those of the Spanish Primera Division, Italian Serie A, English Premier League and German Bundesliga. Importantly, only players who played at least 75% of all games are included in the ranking.

To compare players between the leagues, we correct player rankings calculated for each league using the UEFA soccer associations’ coefficients. In the future, we are going to calculate player statistics for all major European soccer leagues.

To compare teams, average number of points earned per one player of a particular team (i.e., sum of all points earned by all players divided by the number of players) is calculated for each team. To compare teams between the leagues, we correct team rankings calculated for each league using the UEFA soccer associations’ coefficients as described above for the player rankings.

UEFA soccer associations’ coefficients.:

http://www.uefa.com/newsfiles/14041.pdf
this doesn't make sense, does it ??