One of the biggest critiques about the Wins Above Replacement metric has been the difference in how it is calculated by various sites, most notably Fangraphs (fWAR) and Baseball-Reference (rWAR).
As Tom Tango likes to say, WAR is a framework, not a single stat. WAR is a model that attempts to estimate a reality that cannot be measured directly. The choices each site has made in how they calculate WAR are both defensible and have their strengths and weaknesses.
However, according to a tweet by Rob Neyer, the WAR war may be coming to a close.
I don't know if it's true, but if it is, I'm fascinated to find out how they've resolved their differences.robneyer
In today's Crazy Big Nerd News, FanGraphs and Baseball-Reference.com have agreed to standardize Replacement Level. #SABRanalytics