| iossoma vs Kazuya | 7–2 | 77.78% |
| iossoma vs Hwoarang | 4–4 | 50.00% |
| iossoma vs King | 2–5 | 28.57% |
| iossoma vs Dragunov | 2–5 | 28.57% |
| iossoma vs Asuka | 3–2 | 60.00% |
| iossoma vs Azucena | 1–4 | 20.00% |
| iossoma vs Victor | 5–0 | 100.00% |
| iossoma vs Steve | 4–0 | 100.00% |
| iossoma vs Lili | 2–2 | 50.00% |
| iossoma vs Reina | 1–3 | 25.00% |
| iossoma vs Bryan | 3–0 | 100.00% |
| iossoma vs Feng | 3–0 | 100.00% |
| iossoma vs Lars | 3–0 | 100.00% |
| iossoma vs Kuma | 0–3 | 0.00% |
| iossoma vs Eddy | 1–2 | 33.33% |
| iossoma vs Paul | 2–0 | 100.00% |
| iossoma vs Law | 1–1 | 50.00% |
| iossoma vs Yoshimitsu | 2–0 | 100.00% |
| iossoma vs Jin | 1–1 | 50.00% |
| iossoma vs Devil Jin | 0–2 | 0.00% |
| iossoma vs Claudio | 2–0 | 100.00% |
| iossoma vs Zafina | 2–0 | 100.00% |
| iossoma vs Xiaoyu | 0–1 | 0.00% |
| iossoma vs Alisa | 1–0 | 100.00% |
| iossoma vs Shaheen | 0–1 | 0.00% |
| iossoma vs Nina | 1–0 | 100.00% |
| iossoma vs Leroy | 1–0 | 100.00% |
| iossoma vs Jun | 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.