Starting out, I have compared our signings vs. FA losses on the basis of statistical output. Games and games started are included.
This is what we gained and lost last off-season to free agency:
QB J.T. O'Sullivan - Signed with Bengals - 3 games (0 starts), 4/11 for 40 yards, QB rating of 47.5, 3 rushes for 12 yards. 2 Fumbles Lost.
TE Sean Ryan - Signed with Chiefs - 10 games (8 starts), 14 catches for 135 yards, 2 TDs.
TE Billy Bajema - Signed with Rams - 16 games (5 starts), 8 catches for 94 yards.
DT Ronald Fields - Signed with Broncos - 16 games (16 starts), 37 tackles.
CB Donald Strickland - Signed with Jets - 9 games (2 starts), 26 tackles, 2 Passes Defensed, 2 sacks, 1 FF.
WR Bryant Johnson - Signed by Lions - 16 games (16 starts), 35 catches for 417 yards, 3 TDs.
FB Moran Norris - 16 games (7 starts), 14 rushes for 41 yards and 1 TD, 7 receptions for 31 yards, 1 fumble (which wasn't lost).
WR Brandon Jones - 8 games (0 starts), 1 catch for 18 yards, 9 punt returns for 26 yards.
DE Demetric Evans - 14 games (0 starts) 12 tackles, 1.5 sacks, 1 pass defensed.
Players that don't count against us are Pashos and Bly because they were released by their teams rather than left unsigned.
I can't recall whether or not the contracts of the players we've signed count against us, but based on just a statistical comparison, the players we acquired appear to have done less than those we lost. However, all in all, just looking at every player (whether gained or lost), none of them stand out as being a significant contributor really. I could see the 49ers getting nothing, but considering the raw stats, we may get one 7th rounder.