My .02c on Falk, as I stated in another thread, is that we've seen this from him throughout his career. Mediocre performances against Portland State, Wyoming, Cal, UW, and Miami, Fla. in 2015. Last year not performing great to start the Oregon State game, against UCLA, Colorado, UW, and Minnesota.
This will upset some people, but I've always considered him a very good system QB, but not an elite QB. When the scheme is working, he's as good of a game manager as we've had. When the offense struggles, Luke struggles.
My opinion of Luke is not entirely different than that of my all time favorite QB, Tom Brady (I'm originally from Boston). Great game manager, but the real credit goes to the coach and the system.
Not to totally derail this thread... and this pains me to say... but you're wrong on Brady. He still has to make the passes, and he can thread the needle on a crossing route OR hit Gronk in stride 20 yards down the field.
Mechanically those may not be the toughest passes, but as Falk has shown, Brady has what matters most - the mental part of the game.