For a series of stories Monson is producing about the best and worst tacklers, Bell graded out as the NFL's top tackling safety and near the top among all defenders. http://espn.go.com/blog/afceast/post/_/id/11422/tackle-stats-show-bell-was-ultimate-safety
ProFootballFocus.com broke down every play on film and counted the missed tackles and solo tackles. He used those figures to determine a "tackle inefficiency rating." The formula divides missed tackles by attempted solo tackles to come up with an evaluation.
Bell was the NFL's most effective safety tackler. He was blamed for one missed tackle and made 90 solos, giving him a miniscule 1.10 TIR. No defensive player, regardless of position, had more than 60 tackles with one or no misses.
Pair him up with a solid FS with Dansby in front and our pass defense can be pretty darn good, especially if our young corners can turn the corner this year.