| Tortoise vs Law | 4–51 | 7.27% |
| Tortoise vs Reina | 9–36 | 20.00% |
| Tortoise vs King | 8–36 | 18.18% |
| Tortoise vs Eddy | 2–40 | 4.76% |
| Tortoise vs Steve | 7–31 | 18.42% |
| Tortoise vs Jin | 1–31 | 3.12% |
| Tortoise vs Yoshimitsu | 4–20 | 16.67% |
| Tortoise vs Dragunov | 1–21 | 4.55% |
| Tortoise vs Jun | 1–19 | 5.00% |
| Tortoise vs Victor | 4–16 | 20.00% |
| Tortoise vs Lars | 0–18 | 0.00% |
| Tortoise vs Hwoarang | 0–17 | 0.00% |
| Tortoise vs Nina | 3–12 | 20.00% |
| Tortoise vs Lee | 2–13 | 13.33% |
| Tortoise vs Asuka | 2–11 | 15.38% |
| Tortoise vs Feng | 2–10 | 16.67% |
| Tortoise vs Kuma | 1–10 | 9.09% |
| Tortoise vs Azucena | 1–9 | 10.00% |
| Tortoise vs Paul | 0–9 | 0.00% |
| Tortoise vs Lili | 1–8 | 11.11% |
| Tortoise vs Devil Jin | 0–8 | 0.00% |
| Tortoise vs Bryan | 0–7 | 0.00% |
| Tortoise vs Claudio | 0–7 | 0.00% |
| Tortoise vs Leroy | 2–5 | 28.57% |
| Tortoise vs Xiaoyu | 0–6 | 0.00% |
| Tortoise vs Leo | 0–6 | 0.00% |
| Tortoise vs Raven | 3–3 | 50.00% |
| Tortoise vs Kazuya | 0–5 | 0.00% |
| Tortoise vs Alisa | 0–5 | 0.00% |
| Tortoise vs Shaheen | 0–4 | 0.00% |
| Tortoise vs Zafina | 0–3 | 0.00% |
| Tortoise vs Jack-8 | 0–2 | 0.00% |
| Tortoise vs Panda | 0–2 | 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.