User blog comment:Rakanishu2199/Best win rate - Blue or Purple team ?/@comment-4636093-20130112134416/@comment-180.216.3.241-20130112194135

Actually, currently dominating top laners are high sustain laners for various reasons, they should be able to take golems by themself (especially with the level advantage over a duo lane) and the exp isn't split.

The ward in bot lane, whilst easy to sneak on to dragon from the rear as blue, is a lot less cost efficent than a purple team ward covering the entrance to their jungle and dragon entrance, and both teams need to ward tribrush, though if anything purple doesn't need to bother, meaning half the wards required or a free ward for lane bush.

And finally baron, purple team have a lot easier time flash/blink - smite stealing baron, and if purple has a cho'gath blue simply can't do baron because rupture into flash feast is easily going to disrupt your team and secure baron, and he is tanky enough to survive. also they don't have to go by their wraiths, the can also loop round from the top tri-brush. Whilst blue has the advantage of an easy escape/disengage, it also means that they wasted a heap of time doing a baron that they either have to back off and come back in to contest or risk giving them a free baron, and if the team taking baron can just turn around and fight and win, then the whole point is moot!

This all said, last time someone asked it was 51% blue side, though that was a looong time ago (think season one).