User blog comment:Rakanishu2199/Best win rate - Blue or Purple team ?/@comment-5969046-20130112112659

Ok after the comment of Ratsedai, I've performed some research and gathered this :

http://www.reignofgaming.net/blogs/tuck-esports-inquirer/21639-blue-side-vs-purple-inside-the-startling-numbers

http://euw.leagueoflegends.com/board/showthread.php?t=698540

http://na.leagueoflegends.com/board/showthread.php?t=2575379

http://na.leagueoflegends.com/board/showthread.php?t=2213780

'''It seems that the blue team has an overall 60% win rate and the purple team 40%. It seems to be the same in normal/ranked games and in tournaments (???) -RoG.'''

If someone has some more recent information (in particular about tournaments) I'd be interested to see it. Thanks for the help.