NFL: We constantly define quarterbacks as above or below an arbitrary 'average'. If you were attempting to define 'average' by assigning one current NFL Quarterback the moniker, who would it be and why?

Sorry for the long title. I would choose Josh McCown as a perfect example of a replacement level quarterback.For clarification: It does not necessarily have to be a current starter. They also must currently be in the NFL. via /r/nfl http://www.reddit.com/r/nfl/comments/2ll5os/we_constantly_define_quarterbacks_as_above_or/