| Kiummii vs Kazuya | 41–23 | 64.06% |
| Kiummii vs Bryan | 36–25 | 59.02% |
| Kiummii vs Reina | 18–21 | 46.15% |
| Kiummii vs Yoshimitsu | 24–14 | 63.16% |
| Kiummii vs Steve | 24–13 | 64.86% |
| Kiummii vs King | 30–5 | 85.71% |
| Kiummii vs Jin | 26–9 | 74.29% |
| Kiummii vs Lidia | 23–12 | 65.71% |
| Kiummii vs Eddy | 23–10 | 69.70% |
| Kiummii vs Heihachi | 22–10 | 68.75% |
| Kiummii vs Law | 18–12 | 60.00% |
| Kiummii vs Asuka | 25–5 | 83.33% |
| Kiummii vs Lee | 24–6 | 80.00% |
| Kiummii vs Hwoarang | 23–5 | 82.14% |
| Kiummii vs Azucena | 16–11 | 59.26% |
| Kiummii vs Dragunov | 17–8 | 68.00% |
| Kiummii vs Lars | 18–7 | 72.00% |
| Kiummii vs Jun | 14–9 | 60.87% |
| Kiummii vs Feng | 12–8 | 60.00% |
| Kiummii vs Victor | 17–3 | 85.00% |
| Kiummii vs Paul | 10–9 | 52.63% |
| Kiummii vs Kuma | 14–5 | 73.68% |
| Kiummii vs Nina | 15–3 | 83.33% |
| Kiummii vs Lili | 11–6 | 64.71% |
| Kiummii vs Devil Jin | 12–4 | 75.00% |
| Kiummii vs Alisa | 11–4 | 73.33% |
| Kiummii vs Leo | 8–6 | 57.14% |
| Kiummii vs Leroy | 8–5 | 61.54% |
| Kiummii vs Raven | 9–3 | 75.00% |
| Kiummii vs Jack-8 | 6–5 | 54.55% |
| Kiummii vs Claudio | 5–6 | 45.45% |
| Kiummii vs Zafina | 8–3 | 72.73% |
| Kiummii vs Shaheen | 5–5 | 50.00% |
| Kiummii vs Anna | 5–4 | 55.56% |
| Kiummii vs Armor King | 8–1 | 88.89% |
| Kiummii vs Xiaoyu | 4–4 | 50.00% |
| Kiummii vs Fahkumram | 2–1 | 66.67% |
| Kiummii vs Panda | 1–1 | 50.00% |
| Kiummii vs Clive | 2–0 | 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.