Fortuna Köln played 58 league seasons and cup tournaments in the data, 1935 to 2014. Success weighs every finish by how hard that competition was to win; Efficiency is the share of what the club could have won that it did win; Edge compares that with an average participant (×1.00).
| 574 | Racing de Córdoba (Argentina) | 4.5 |
| 575 | Excelsior (Netherlands) | 4.5 |
| 576 | FC Hansa Rostock (Germany) | 4.5 |
| 577 | Fortuna Köln (Germany) | 4.4 |
| 578 | Reggiana (Italy) | 4.4 |
| 579 | São Cristovão (Brazil) | 4.4 |
| 580 | Levski Sofia (BUL) | 4.4 |