Excelsior Mouscron played 61 league seasons and cup tournaments in the data, 1927 to 2022. 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).
| 635 | MVV (Netherlands) | 3.8 |
| 636 | Penafiel (Portugal) | 3.7 |
| 637 | Criciúma (Brazil) | 3.7 |
| 638 | Excelsior Mouscron (Belgium) | 3.7 |
| 639 | Fénix (Uruguay) | 3.7 |
| 640 | RKC Waalwijk (Netherlands) | 3.7 |
| 641 | Stade Francais (France) | 3.7 |