Its not a horrible decision to have!
Oak is stout at pass def but still give up a whole lot to TE
SF is does'nt give up many fantasy points to TE but have a pretty stinky pass def overall
So coin flip, ..... no I'd have to go with Davis for a few reasons other than match ups. Campbell does'nt seem to find Miller as well as Gradkowski.
Davis is super strong, fast and has a three things going for him. One FRANK GORE sets up brilliant play actions with his almost 6ypc avg TWO Alex Smith is under a lot of pressure for a huge game, I think they get it done. THREE oddly enough Crabtree did a bit of Flash in the Pan last week which will get him being covered closely and maybe doubled every few possesions there for giving more space for Davis.
I go with Davis.
here is minehttp://www.fantasyfootballcafe.com/forums/viewtopic.php?f=19&t=480509
QB D. Brees
RB A. Peterson === A. Morris, M. Bush, M. LeShoure, A. Green, R. Jennings
WR P. Harvin, B. W. Welker,=== D. Amendola
TE J. Graham === A. Hernandez, K. Rudolph
K G. Zuerlein
Flex is TE or WR/RB