Sabermetrics have been a tremendous analytical tool in evaluating baseball, but I often think about the linear weights system developed by Pete Palmer several decades ago. Palmer is brilliant, but others who studied his linear weights system eventually demonstrated a number of shortcomings in its player evaluations. I mention this because WAR, for all of its value, is sometimes held up as if it was infallible even though not everyone even calculates WAR the same way. I would not be shocked if 5 or 10 years from now sabermetricians are demonstrating that the way that WAR was calculated in 2012 was erroneous.
I believe Trout is probably the best player in the AL this season but it will not be a disgrace if Cabrera wins the MVP.