After 2 games -- Moss has been thrown to 6 times -- those six passes thrown at him have resulted in 5 catches for 61 yards, 1 Touchdown, plus one defensive pass interference penalty in the endzone.
He's literally been perfect from the few targets he has received.
Here is a chart from ESPN on how the offense as a whole has performed with him on the field VS him not on the field:
It's pretty annoying watching these games when you know he can do a lot more. He's thrown his left arm up twice -- his signal that if the QB is looking right now he knows he has his defender beat -- both times he didn't get the ball.
I know he's only there because the defense and the running game is his best chance to get a ring. He's going to have a hard time getting a guaranteed new contract next year at this rate.
Literally, his biggest impact with this team, is getting Michael Crabtree and Vernon Davis to sit in the front row at team meetings.
That was reportedly the only thing Harbaugh asked of him, was to sit in the front row -- as he saw both Crabtree and Vernon Davis gravitated to Moss and both of them were guys who would (from the sounds of it) doze off in the back of the room during team meetings.