| Iamdumdum vs Armor King | 8–15 | 34.78% |
| Iamdumdum vs Jin | 6–3 | 66.67% |
| Iamdumdum vs Lili | 5–4 | 55.56% |
| Iamdumdum vs Azucena | 5–4 | 55.56% |
| Iamdumdum vs Leo | 4–3 | 57.14% |
| Iamdumdum vs King | 3–3 | 50.00% |
| Iamdumdum vs Eddy | 2–4 | 33.33% |
| Iamdumdum vs Fahkumram | 4–2 | 66.67% |
| Iamdumdum vs Reina | 2–2 | 50.00% |
| Iamdumdum vs Lidia | 3–1 | 75.00% |
| Iamdumdum vs Law | 1–2 | 33.33% |
| Iamdumdum vs Dragunov | 2–1 | 66.67% |
| Iamdumdum vs Hwoarang | 1–1 | 50.00% |
| Iamdumdum vs Bryan | 2–0 | 100.00% |
| Iamdumdum vs Kazuya | 0–2 | 0.00% |
| Iamdumdum vs Steve | 2–0 | 100.00% |
| Iamdumdum vs Asuka | 2–0 | 100.00% |
| Iamdumdum vs Alisa | 0–2 | 0.00% |
| Iamdumdum vs Raven | 2–0 | 100.00% |
| Iamdumdum vs Heihachi | 2–0 | 100.00% |
| Iamdumdum vs Paul | 1–0 | 100.00% |
| Iamdumdum vs Yoshimitsu | 1–0 | 100.00% |
| Iamdumdum vs Jun | 1–0 | 100.00% |
| Iamdumdum vs Anna | 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.