| Iiak vs Kazuya | 11–8 | 57.89% |
| Iiak vs Hwoarang | 11–7 | 61.11% |
| Iiak vs Bryan | 10–5 | 66.67% |
| Iiak vs Asuka | 9–6 | 60.00% |
| Iiak vs Steve | 9–4 | 69.23% |
| Iiak vs Dragunov | 8–5 | 61.54% |
| Iiak vs King | 5–4 | 55.56% |
| Iiak vs Paul | 6–2 | 75.00% |
| Iiak vs Jun | 4–4 | 50.00% |
| Iiak vs Anna | 4–4 | 50.00% |
| Iiak vs Law | 3–4 | 42.86% |
| Iiak vs Jin | 7–0 | 100.00% |
| Iiak vs Jack-8 | 4–3 | 57.14% |
| Iiak vs Victor | 3–4 | 42.86% |
| Iiak vs Devil Jin | 5–1 | 83.33% |
| Iiak vs Feng | 1–5 | 16.67% |
| Iiak vs Lars | 3–3 | 50.00% |
| Iiak vs Leroy | 5–1 | 83.33% |
| Iiak vs Reina | 1–5 | 16.67% |
| Iiak vs Xiaoyu | 3–2 | 60.00% |
| Iiak vs Heihachi | 1–4 | 20.00% |
| Iiak vs Nina | 3–1 | 75.00% |
| Iiak vs Azucena | 4–0 | 100.00% |
| Iiak vs Eddy | 3–1 | 75.00% |
| Iiak vs Alisa | 2–1 | 66.67% |
| Iiak vs Claudio | 2–1 | 66.67% |
| Iiak vs Lidia | 0–3 | 0.00% |
| Iiak vs Fahkumram | 2–1 | 66.67% |
| Iiak vs Yoshimitsu | 2–0 | 100.00% |
| Iiak vs Lili | 1–1 | 50.00% |
| Iiak vs Leo | 1–1 | 50.00% |
| Iiak vs Lee | 0–1 | 0.00% |
| Iiak vs Kuma | 0–1 | 0.00% |
| Iiak vs Zafina | 1–0 | 100.00% |
| Iiak vs Raven | 1–0 | 100.00% |
| Iiak vs Clive | 1–0 | 100.00% |
| Iiak vs Miary Zo | 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.