| IronJ4B vs King | 19–15 | 55.88% |
| IronJ4B vs Hwoarang | 14–16 | 46.67% |
| IronJ4B vs Kazuya | 18–11 | 62.07% |
| IronJ4B vs Jin | 19–9 | 67.86% |
| IronJ4B vs Bryan | 13–10 | 56.52% |
| IronJ4B vs Steve | 10–8 | 55.56% |
| IronJ4B vs Yoshimitsu | 11–5 | 68.75% |
| IronJ4B vs Asuka | 10–6 | 62.50% |
| IronJ4B vs Law | 7–7 | 50.00% |
| IronJ4B vs Eddy | 11–2 | 84.62% |
| IronJ4B vs Dragunov | 7–5 | 58.33% |
| IronJ4B vs Jun | 8–3 | 72.73% |
| IronJ4B vs Reina | 5–4 | 55.56% |
| IronJ4B vs Azucena | 6–3 | 66.67% |
| IronJ4B vs Paul | 7–1 | 87.50% |
| IronJ4B vs Devil Jin | 6–2 | 75.00% |
| IronJ4B vs Xiaoyu | 5–2 | 71.43% |
| IronJ4B vs Kuma | 3–3 | 50.00% |
| IronJ4B vs Raven | 3–3 | 50.00% |
| IronJ4B vs Lili | 4–1 | 80.00% |
| IronJ4B vs Feng | 2–2 | 50.00% |
| IronJ4B vs Lars | 2–2 | 50.00% |
| IronJ4B vs Leroy | 2–2 | 50.00% |
| IronJ4B vs Jack-8 | 2–1 | 66.67% |
| IronJ4B vs Victor | 2–1 | 66.67% |
| IronJ4B vs Leo | 0–2 | 0.00% |
| IronJ4B vs Alisa | 0–2 | 0.00% |
| IronJ4B vs Lee | 2–0 | 100.00% |
| IronJ4B vs Anna | 1–1 | 50.00% |
| IronJ4B vs Armor King | 0–2 | 0.00% |
| IronJ4B vs Miary Zo | 0–2 | 0.00% |
| IronJ4B vs Claudio | 0–1 | 0.00% |
| IronJ4B vs Shaheen | 1–0 | 100.00% |
| IronJ4B vs Zafina | 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.