ANY/A has the highest correlation of any passing/QB stat to QB wins (.55).
ANY/A - adjusted net yards per passing attempt: (pass yards + 20*(pass TD) - 45*(interceptions thrown) - sack yards)/(passing attempts + sacks). See AY/A.
AY/A - adjusted yards per passing attempt: (pass yards + 20*(pass TD) - 45*(interceptions thrown))/(passing attempts). This stat was introduced, and the reasoning behind it thoroughly explained in a book called The Hidden Game of Football, by Bob Carroll, Pete Palmer, and John Thorn. Note that we are now using 20 yards per TD instead of 10, because of research by Chase Stuart at the p-f-r blog.
And here's the list of QBs by ANY/A
14. Cam Newton (23) 6.44 2011-2012 car
Food for thought during the offseason and the future.