| iwakura vs Reina | 20–24 | 45.45% |
| iwakura vs Jin | 7–30 | 18.92% |
| iwakura vs Azucena | 10–15 | 40.00% |
| iwakura vs Lili | 7–15 | 31.82% |
| iwakura vs King | 8–12 | 40.00% |
| iwakura vs Heihachi | 9–10 | 47.37% |
| iwakura vs Yoshimitsu | 9–7 | 56.25% |
| iwakura vs Xiaoyu | 4–12 | 25.00% |
| iwakura vs Kazuya | 4–12 | 25.00% |
| iwakura vs Steve | 3–13 | 18.75% |
| iwakura vs Dragunov | 7–8 | 46.67% |
| iwakura vs Lee | 4–10 | 28.57% |
| iwakura vs Bryan | 5–8 | 38.46% |
| iwakura vs Hwoarang | 2–10 | 16.67% |
| iwakura vs Asuka | 4–8 | 33.33% |
| iwakura vs Eddy | 2–9 | 18.18% |
| iwakura vs Lars | 2–7 | 22.22% |
| iwakura vs Nina | 1–7 | 12.50% |
| iwakura vs Leroy | 3–5 | 37.50% |
| iwakura vs Lidia | 1–6–1 | 14.29% |
| iwakura vs Jack-8 | 1–6 | 14.29% |
| iwakura vs Zafina | 4–3 | 57.14% |
| iwakura vs Paul | 1–5 | 16.67% |
| iwakura vs Law | 1–4 | 20.00% |
| iwakura vs Devil Jin | 2–3 | 40.00% |
| iwakura vs Alisa | 2–3 | 40.00% |
| iwakura vs Leo | 0–4 | 0.00% |
| iwakura vs Claudio | 0–4 | 0.00% |
| iwakura vs Jun | 1–3 | 25.00% |
| iwakura vs Feng | 2–0 | 100.00% |
| iwakura vs Panda | 0–2 | 0.00% |
| iwakura vs Raven | 2–0 | 100.00% |
| iwakura vs Victor | 0–1 | 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.