| Tortoise vs King | 19–28 | 40.43% |
| Tortoise vs Dragunov | 16–11 | 59.26% |
| Tortoise vs Kazuya | 14–12 | 53.85% |
| Tortoise vs Reina | 6–20 | 23.08% |
| Tortoise vs Bryan | 7–13 | 35.00% |
| Tortoise vs Paul | 6–13 | 31.58% |
| Tortoise vs Steve | 9–8 | 52.94% |
| Tortoise vs Jin | 6–10 | 37.50% |
| Tortoise vs Azucena | 6–10 | 37.50% |
| Tortoise vs Asuka | 6–8 | 42.86% |
| Tortoise vs Lili | 6–8 | 42.86% |
| Tortoise vs Jun | 6–8 | 42.86% |
| Tortoise vs Hwoarang | 9–4 | 69.23% |
| Tortoise vs Lars | 5–5 | 50.00% |
| Tortoise vs Eddy | 2–8 | 20.00% |
| Tortoise vs Devil Jin | 4–5 | 44.44% |
| Tortoise vs Leo | 4–4 | 50.00% |
| Tortoise vs Nina | 3–5 | 37.50% |
| Tortoise vs Yoshimitsu | 4–4 | 50.00% |
| Tortoise vs Claudio | 1–6 | 14.29% |
| Tortoise vs Kuma | 6–1 | 85.71% |
| Tortoise vs Victor | 2–5 | 28.57% |
| Tortoise vs Raven | 5–2 | 71.43% |
| Tortoise vs Jack-8 | 3–3 | 50.00% |
| Tortoise vs Alisa | 2–4 | 33.33% |
| Tortoise vs Law | 2–3 | 40.00% |
| Tortoise vs Lee | 2–2 | 50.00% |
| Tortoise vs Zafina | 2–1 | 66.67% |
| Tortoise vs Xiaoyu | 0–2 | 0.00% |
| Tortoise vs Panda | 1–1 | 50.00% |
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.