Are you saying that Brown's production was better than Wallace's or the other way around? The numbers bear that Wallace outproduced Brown this year, so that would make sense if that's what you're saying.
I'm saying that, on a game-by-game basis, the numbers were comparable...
Brown - 5 receptions per game - 60.5 yards per game - .4 TD per game
Wallace - 4.2 receptions per game - 55.7 yards per game - .5 TD per game