Didnt he also technically play 2 extra games too? Texas didnt have a conference title game and the playoff is essentially 2 bowl games
if we exclude the playoffs and only talk about their 13 game seasons then duvernay had nearly 90 more yards than jefferson
jefferson went off for over 300 yards in the 2 playoff games
the other thing to note is jefferson's production is a bit more volatile - there were a couple of games where he only had 20 yds whereas duvernay never had a game under 50 (and only 2 total under 60)
jefferson was a much better prospect than duvernay with his route running etc. but to use production to make that point was a bad choice by PFF