During Moss' so-called "off-years" (or I've heard it called worse from some guys) during the last 3 years, he actually has better stats than Roberts did in those same years, EVEN with a reduced role.
Over the past 3 years, Moss averaged 12.47 YPC, while Roberts averaged 11.49 YPC.
During that time, Moss also outscored Roberts with 14 TD's for Moss, to Roberts' 9 TD's.
Receptions and total yards were similar.
Again, he did most of that playing part-time, compared to Roberts' full-time.
Yet, Moss is depicted as some deteriorated crippled Senior Citizen, yet he's played no worse, and probably better than our current #3, even in his "aging years"