Well, if you take the results of recent years in the Champions League and in the Europa League, it seems that the Spanish championship is the strongest, but it is a controversial issue, in Spain there are two super clubs real and Barcelona, and if you take in the English League, there are more equal clubs, two teams from Manchester, Chelsea, Arsenal, Liverpool, Tottenham , the composition of the most competitive in the English Premier League, the rest are inferior in Germany one super club Bayern, in Italy Italian Juventus!