Based on actual math! Brent Celek is the most valuable TE in the NFL so far, at least based solely on catches. How long until he gets his national props? If he keeps this up, I'm thinking that by December he'll be mentioned in a similar vein to Jason Witten and Dallas Clark, both of whom he's outperformed this year.
Also of note, Kevin Kolb had the #2 best game of all NFL QBs (not adjusted for opponents) http://footballoutsiders.com/quick-reads/2009/week-3-quick-reads despite not having a WR in the top 5! It's called spreading the ball around.