While I disagree about his Cam analysis, he's dead on about passing yards per game being an overrated stat, especially in this Steroid offense era. Yards per attempt is a much better stat.
Your comment works against Alex Smith more so than for him. You have have average QB's like Matt Schaub throwing for between 4k and 5k yards and then you have Alex Smith who just reached a career high of 3100 yards what does that say about him?