Suh has been anything but invisible this season. His role is to occupy players and force team to go the other direction, which they have done...in spades, unfortunately many of the players around haven't capitalized on those opportunities until this past week (why we exploded for sacks....much of it was created by the attention Tenn gave Suh). We have two other players playing for contracts and have had less then mediocre seasons...while I will put Millers struggles on the offense as a whole, there is no reason for Vernon to be performing at such a low level to this point in the season.
Parker was injured for all of camp and has players playing exceptional well in front of him and the nature of the rookie contracts leads to players wanting to have strong performances in order to earn that lucrative second contract.
One last note on Suh....he's been consistently good his entire career and this after landing a large sum on his rookie contract (part of the last class to get those huge rookie deals) honestly he was already "rolling in the dough".