I upgraded Fitz to Stafford but now I'm reconsidering the trade. I have Steve Smith (Panthers) and Wallace already starting so I decided to trade my Stevie Johnson for Stafford because I didn't want me team to live or die because of the Bills and Stafford was going to give my team decent fantasy production on a more consistent basis.
Personally, I prefer Stevie Johnson over your other WRs (especially the NOLA WRs, Brees spreads the ball too much). The upgrade to Stafford doesn't seems to offset the downgrade of Stevie to your bench WRs.
12 Team, Standard ESPN Scoring:
QB - Stafford, Fitzpatrick
RB - Peterson, Forte, Battle, McGahee, Tate, Addai
WR - Wallace, Smith, Breaston, Moore
TE - Gates
DEF - 49ers, Cowboys
K - Kasay