league-of-legends
I was browsing the statistics on LoLKing and found something odd.
http://www.lolking.net/charts?region=all&type=item-popularity&range=monthly&map=ha&queue=normal
On Howling Abyss (ARAM map), the Cookie, given to every player at the beginning of the game, is not exactly 50% win/loss. (We are talking about 50.15%)
How could this happen? How can an item that everybody (event the afks) gets every game doesn't have a 50% win rate?
Runes, as well as items like Sorcerer's Shoes and Haunting Guise offer FLAT penetration (i.e., you ignore up to X) of your opponent's MR.
The "average" champion has a base MR of 30, that doesn't increase with levels. With ~9 MR penetration from runes, sorcerer's shoes are enough to bring that down to basically zero.
The other options are reduction (triggered by champion abilities like Amumu, Ryze, or Fiddlesticks, or the Abyssal Scepter) which actually decrease your opponent's MR (and so stacks with penetration) and % based (the talent and the void staff). Of these, Reduction is the only way one can bring your target's MR below zero.
When a single character benefits from one or more of these, they are applied in this order:
Some of the above information can also be found in the game mechanics thread on the official LoL forums, here: http://www.leagueoflegends.com/board/showthread.php?t=3287
The answer to your question would then become:
54.36 MR * .85 = 46.206 MR - 8.55 = 37.656 effective MR. (I don't know the formula off hand to convert that to % damage reduced)
LoL has some inconsistent wordings, I'll agree.
With the Hecarim patch, this functionality has been added:
Added first win of the day status to the summoner profile.
To access it, simply click the tab to view your profile. On the main screen where you can see your various rankings, the main banner will indicate the status of the daily bonus on the lower right.
Sources: Hecarim Patch Notes - Riot Games & V1.0.0.138 Patch Notes - League of Legends Wikia
Best Answer
The champion Rengar does not receive the Poro Snax, instead he has his bonetooth necklace trinket. This would explain the small gap in wins-loses.