| Iwanashi vs Hwoarang | 30–12 | 71.43% |
| Iwanashi vs Dragunov | 22–20 | 52.38% |
| Iwanashi vs Reina | 25–16 | 60.98% |
| Iwanashi vs Paul | 25–11 | 69.44% |
| Iwanashi vs Lili | 15–12 | 55.56% |
| Iwanashi vs Kazuya | 16–10 | 61.54% |
| Iwanashi vs Yoshimitsu | 13–11 | 54.17% |
| Iwanashi vs Jin | 13–9 | 59.09% |
| Iwanashi vs Feng | 10–11 | 47.62% |
| Iwanashi vs Law | 10–10 | 50.00% |
| Iwanashi vs King | 12–8 | 60.00% |
| Iwanashi vs Bryan | 11–9 | 55.00% |
| Iwanashi vs Devil Jin | 18–2 | 90.00% |
| Iwanashi vs Eddy | 11–7 | 61.11% |
| Iwanashi vs Azucena | 11–6 | 64.71% |
| Iwanashi vs Victor | 11–6 | 64.71% |
| Iwanashi vs Lee | 3–12 | 20.00% |
| Iwanashi vs Asuka | 9–5 | 64.29% |
| Iwanashi vs Claudio | 3–11 | 21.43% |
| Iwanashi vs Leroy | 6–7 | 46.15% |
| Iwanashi vs Steve | 8–4 | 66.67% |
| Iwanashi vs Xiaoyu | 4–6 | 40.00% |
| Iwanashi vs Lars | 2–8 | 20.00% |
| Iwanashi vs Zafina | 4–6 | 40.00% |
| Iwanashi vs Lidia | 7–3 | 70.00% |
| Iwanashi vs Leo | 7–1 | 87.50% |
| Iwanashi vs Alisa | 4–4 | 50.00% |
| Iwanashi vs Jun | 2–6 | 25.00% |
| Iwanashi vs Raven | 3–2 | 60.00% |
| Iwanashi vs Nina | 2–2 | 50.00% |
| Iwanashi vs Kuma | 2–1 | 66.67% |
| Iwanashi vs Jack-8 | 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.