| Iona Rose vs Clive | 23–23 | 50.00% |
| Iona Rose vs Bryan | 13–9 | 59.09% |
| Iona Rose vs Kazuya | 11–10 | 52.38% |
| Iona Rose vs Reina | 6–9 | 40.00% |
| Iona Rose vs King | 9–5 | 64.29% |
| Iona Rose vs Jin | 4–10 | 28.57% |
| Iona Rose vs Dragunov | 11–1 | 91.67% |
| Iona Rose vs Asuka | 4–7 | 36.36% |
| Iona Rose vs Hwoarang | 6–4 | 60.00% |
| Iona Rose vs Yoshimitsu | 4–4 | 50.00% |
| Iona Rose vs Xiaoyu | 5–3 | 62.50% |
| Iona Rose vs Feng | 4–4 | 50.00% |
| Iona Rose vs Heihachi | 4–4 | 50.00% |
| Iona Rose vs Law | 2–3 | 40.00% |
| Iona Rose vs Lili | 0–5 | 0.00% |
| Iona Rose vs Lee | 2–2 | 50.00% |
| Iona Rose vs Jun | 4–0 | 100.00% |
| Iona Rose vs Paul | 3–0 | 100.00% |
| Iona Rose vs Devil Jin | 3–0 | 100.00% |
| Iona Rose vs Leo | 2–1 | 66.67% |
| Iona Rose vs Lars | 1–2 | 33.33% |
| Iona Rose vs Nina | 2–1 | 66.67% |
| Iona Rose vs Victor | 1–2 | 33.33% |
| Iona Rose vs Lidia | 2–1 | 66.67% |
| Iona Rose vs Steve | 2–0 | 100.00% |
| Iona Rose vs Raven | 2–0 | 100.00% |
| Iona Rose vs Eddy | 2–0 | 100.00% |
| Iona Rose vs Shaheen | 1–0 | 100.00% |
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.