| ioww vs Jin | 32–39 | 45.07% |
| ioww vs Steve | 36–20 | 64.29% |
| ioww vs Dragunov | 24–29 | 45.28% |
| ioww vs Kazuya | 9–31 | 22.50% |
| ioww vs Hwoarang | 19–20 | 48.72% |
| ioww vs Reina | 18–21 | 46.15% |
| ioww vs King | 8–25 | 24.24% |
| ioww vs Lili | 14–17 | 45.16% |
| ioww vs Jun | 10–13 | 43.48% |
| ioww vs Bryan | 11–11 | 50.00% |
| ioww vs Eddy | 4–17 | 19.05% |
| ioww vs Asuka | 10–10 | 50.00% |
| ioww vs Law | 7–12 | 36.84% |
| ioww vs Devil Jin | 5–14 | 26.32% |
| ioww vs Lee | 6–13 | 31.58% |
| ioww vs Victor | 5–14 | 26.32% |
| ioww vs Armor King | 6–12 | 33.33% |
| ioww vs Lars | 6–11 | 35.29% |
| ioww vs Xiaoyu | 2–13 | 13.33% |
| ioww vs Feng | 4–10 | 28.57% |
| ioww vs Nina | 4–9 | 30.77% |
| ioww vs Heihachi | 2–10 | 16.67% |
| ioww vs Yoshimitsu | 7–4 | 63.64% |
| ioww vs Claudio | 3–8 | 27.27% |
| ioww vs Alisa | 2–8 | 20.00% |
| ioww vs Azucena | 3–7 | 30.00% |
| ioww vs Clive | 5–5 | 50.00% |
| ioww vs Miary Zo | 5–5 | 50.00% |
| ioww vs Anna | 2–7 | 22.22% |
| ioww vs Lidia | 2–4 | 33.33% |
| ioww vs Fahkumram | 2–4 | 33.33% |
| ioww vs Paul | 1–3 | 25.00% |
| ioww vs Leroy | 1–3 | 25.00% |
| ioww vs Shaheen | 1–2 | 33.33% |
| ioww vs Zafina | 1–2 | 33.33% |
| ioww vs Jack-8 | 0–2 | 0.00% |
| ioww vs Leo | 0–2 | 0.00% |
| ioww vs Raven | 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.