| Iwazaru vs King | 2–11 | 15.38% |
| Iwazaru vs Reina | 2–10 | 16.67% |
| Iwazaru vs Eddy | 2–9 | 18.18% |
| Iwazaru vs Hwoarang | 2–8 | 20.00% |
| Iwazaru vs Bryan | 1–9 | 10.00% |
| Iwazaru vs Jin | 0–9 | 0.00% |
| Iwazaru vs Lili | 0–9 | 0.00% |
| Iwazaru vs Lidia | 3–6 | 33.33% |
| Iwazaru vs Steve | 1–7 | 12.50% |
| Iwazaru vs Nina | 3–5 | 37.50% |
| Iwazaru vs Devil Jin | 0–7 | 0.00% |
| Iwazaru vs Law | 0–6 | 0.00% |
| Iwazaru vs Victor | 0–6 | 0.00% |
| Iwazaru vs Dragunov | 0–5 | 0.00% |
| Iwazaru vs Heihachi | 0–5 | 0.00% |
| Iwazaru vs Panda | 0–4 | 0.00% |
| Iwazaru vs Azucena | 3–1 | 75.00% |
| Iwazaru vs Kazuya | 0–3 | 0.00% |
| Iwazaru vs Asuka | 2–1 | 66.67% |
| Iwazaru vs Xiaoyu | 2–0 | 100.00% |
| Iwazaru vs Feng | 0–2 | 0.00% |
| Iwazaru vs Lee | 0–2 | 0.00% |
| Iwazaru vs Raven | 2–0 | 100.00% |
| Iwazaru vs Jack-8 | 1–0 | 100.00% |
| Iwazaru vs Leo | 0–1 | 0.00% |
| Iwazaru vs Lars | 0–1 | 0.00% |
| Iwazaru vs Claudio | 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.