| Mostly Useless vs King | 28–68 | 29.17% |
| Mostly Useless vs Kazuya | 13–52 | 20.00% |
| Mostly Useless vs Bryan | 6–50 | 10.71% |
| Mostly Useless vs Reina | 15–41 | 26.79% |
| Mostly Useless vs Jin | 10–41 | 19.61% |
| Mostly Useless vs Steve | 6–44 | 12.00% |
| Mostly Useless vs Dragunov | 14–36 | 28.00% |
| Mostly Useless vs Feng | 8–33 | 19.51% |
| Mostly Useless vs Lili | 6–28 | 17.65% |
| Mostly Useless vs Armor King | 10–23 | 30.30% |
| Mostly Useless vs Lidia | 3–28 | 9.68% |
| Mostly Useless vs Yoshimitsu | 6–24 | 20.00% |
| Mostly Useless vs Victor | 8–22 | 26.67% |
| Mostly Useless vs Hwoarang | 4–25 | 13.79% |
| Mostly Useless vs Alisa | 5–23 | 17.86% |
| Mostly Useless vs Nina | 2–24 | 7.69% |
| Mostly Useless vs Eddy | 3–23 | 11.54% |
| Mostly Useless vs Jack-8 | 6–18 | 25.00% |
| Mostly Useless vs Asuka | 6–18 | 25.00% |
| Mostly Useless vs Azucena | 2–22 | 8.33% |
| Mostly Useless vs Lars | 4–15 | 21.05% |
| Mostly Useless vs Lee | 0–16 | 0.00% |
| Mostly Useless vs Raven | 1–14 | 6.67% |
| Mostly Useless vs Claudio | 0–13 | 0.00% |
| Mostly Useless vs Kuma | 2–10 | 16.67% |
| Mostly Useless vs Leroy | 5–7 | 41.67% |
| Mostly Useless vs Xiaoyu | 3–8 | 27.27% |
| Mostly Useless vs Jun | 5–6 | 45.45% |
| Mostly Useless vs Law | 5–5 | 50.00% |
| Mostly Useless vs Heihachi | 3–7 | 30.00% |
| Mostly Useless vs Leo | 1–8 | 11.11% |
| Mostly Useless vs Paul | 0–8 | 0.00% |
| Mostly Useless vs Miary Zo | 2–6 | 25.00% |
| Mostly Useless vs Shaheen | 3–4 | 42.86% |
| Mostly Useless vs Devil Jin | 0–6 | 0.00% |
| Mostly Useless vs Zafina | 4–2 | 66.67% |
| Mostly Useless vs Anna | 2–4 | 33.33% |
| Mostly Useless vs Fahkumram | 2–4 | 33.33% |
| Mostly Useless vs Clive | 0–4 | 0.00% |
| Mostly Useless vs Panda | 0–3 | 0.00% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.