I would say that, whilst some of the correllation between the turnover rate and the other rankings has to do with the coaches, some of it will also be due to personnel. For instance, having DeAngelo Hall means you can count on having quite a few interceptions every season, but you can also count on him blowing his coverage every other down, which is something that a coach might not be able to fix. n a different note, I’d like to see how the rankings look for defensive scoring for all of these coaches
(mostly because I want to see Lovie Smith’s name at the top of another category. I think he is, anyway.)

Coach Tot
Mike Tomlin 33
Rex Ryan 36
John Harbaugh 37
Mike Pettine 47
Dick LeBeau 47
Chuck Pagano 56
Lovie Smith 85
Ron Rivera 89
Dean Pees 93
Wade Phillips 115
Mike Smith 128
John Fox 130
Bill Belichick 149
Leslie Frazier 155
Mike Zimmer 172
Jack Del Rio 178
Marvin Lewis 181
Jeff Fisher 191
Dick Jauron 194
Perry Fewell 197
Greg Manusky 200
Dom Capers 201
Juan Castillo 202
Vic Fangio 206
Romeo Crennel 227
Mike Nolan 227
Pete Carroll 235
Steve Spagnuolo 239
Jim Schwartz 241
Ray Horton 247
Sean McDermott 252
Jerry Gray 252
Gus Bradley 267
Bill Sheridan 278
Mel Tucker 287
Rob Ryan 287
Rod Marinelli 291
Gunther Cunningham 302
Dennis Allen 303
Jim Haslett 323

Harbaugh, Rex Ryan and Pettine are the only coaches to finish in the top-10 of all 9 categories. Tomlin is 17th in turnovers, top-10 for everything else. Lebeau and Pagano also only miss in turnovers.

In fact, there is nearly an inverse relationship between turnovers forced, and success in the other 8 categories. Marinelli is 5th in turnovers, but no better than 28th in any other category. McDermott is 2nd, but no better than 25th anywhere else.

Is it possible that some coaches emphasize forcing turnovers, only to end up giving up a lot of big plays? While some of the more successful coaches choose to have a strong defense, and not worry about forcing turnovers?