| Iomeronium vs Jin | 89–117 | 43.20% |
| Iomeronium vs Kazuya | 85–115 | 42.50% |
| Iomeronium vs Hwoarang | 82–64 | 56.16% |
| Iomeronium vs Bryan | 66–68 | 49.25% |
| Iomeronium vs Heihachi | 50–82 | 37.88% |
| Iomeronium vs Law | 54–72 | 42.86% |
| Iomeronium vs King | 53–70 | 43.09% |
| Iomeronium vs Reina | 54–66 | 45.00% |
| Iomeronium vs Steve | 57–61 | 48.31% |
| Iomeronium vs Clive | 47–59 | 44.34% |
| Iomeronium vs Dragunov | 39–56 | 41.05% |
| Iomeronium vs Yoshimitsu | 42–39 | 51.85% |
| Iomeronium vs Lili | 37–44 | 45.68% |
| Iomeronium vs Eddy | 52–27 | 65.82% |
| Iomeronium vs Jun | 40–37 | 51.95% |
| Iomeronium vs Paul | 27–38 | 41.54% |
| Iomeronium vs Asuka | 21–39 | 35.00% |
| Iomeronium vs Devil Jin | 28–32 | 46.67% |
| Iomeronium vs Xiaoyu | 28–30 | 48.28% |
| Iomeronium vs Feng | 23–32 | 41.82% |
| Iomeronium vs Lidia | 30–24 | 55.56% |
| Iomeronium vs Victor | 21–29 | 42.00% |
| Iomeronium vs Jack-8 | 18–26 | 40.91% |
| Iomeronium vs Nina | 15–29 | 34.09% |
| Iomeronium vs Lee | 12–32 | 27.27% |
| Iomeronium vs Lars | 17–22 | 43.59% |
| Iomeronium vs Azucena | 19–18 | 51.35% |
| Iomeronium vs Leroy | 20–16 | 55.56% |
| Iomeronium vs Alisa | 19–15 | 55.88% |
| Iomeronium vs Claudio | 13–19 | 40.62% |
| Iomeronium vs Anna | 11–21 | 34.38% |
| Iomeronium vs Leo | 13–13 | 50.00% |
| Iomeronium vs Raven | 13–10 | 56.52% |
| Iomeronium vs Kuma | 7–11 | 38.89% |
| Iomeronium vs Miary Zo | 8–9 | 47.06% |
| Iomeronium vs Shaheen | 5–10 | 33.33% |
| Iomeronium vs Fahkumram | 2–12 | 14.29% |
| Iomeronium vs Zafina | 5–8 | 38.46% |
| Iomeronium vs Armor King | 5–7 | 41.67% |
| Iomeronium vs Panda | 4–3 | 57.14% |
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.