| IAmJustAce vs Kazuya | 107–111 | 49.08% |
| IAmJustAce vs Jin | 66–87 | 43.14% |
| IAmJustAce vs King | 72–79 | 47.68% |
| IAmJustAce vs Law | 54–79 | 40.60% |
| IAmJustAce vs Hwoarang | 49–73 | 40.16% |
| IAmJustAce vs Bryan | 60–58 | 50.85% |
| IAmJustAce vs Steve | 54–60 | 47.37% |
| IAmJustAce vs Eddy | 50–63 | 44.25% |
| IAmJustAce vs Reina | 59–34 | 63.44% |
| IAmJustAce vs Heihachi | 34–58 | 36.96% |
| IAmJustAce vs Paul | 40–49 | 44.94% |
| IAmJustAce vs Devil Jin | 32–47 | 40.51% |
| IAmJustAce vs Dragunov | 32–47 | 40.51% |
| IAmJustAce vs Lili | 41–34 | 54.67% |
| IAmJustAce vs Yoshimitsu | 24–42 | 36.36% |
| IAmJustAce vs Xiaoyu | 30–26 | 53.57% |
| IAmJustAce vs Jun | 22–34 | 39.29% |
| IAmJustAce vs Nina | 21–34 | 38.18% |
| IAmJustAce vs Asuka | 20–29 | 40.82% |
| IAmJustAce vs Azucena | 25–21 | 54.35% |
| IAmJustAce vs Fahkumram | 25–20 | 55.56% |
| IAmJustAce vs Feng | 21–19 | 52.50% |
| IAmJustAce vs Alisa | 11–28 | 28.21% |
| IAmJustAce vs Lee | 15–23 | 39.47% |
| IAmJustAce vs Victor | 14–17 | 45.16% |
| IAmJustAce vs Raven | 14–17 | 45.16% |
| IAmJustAce vs Miary Zo | 14–17 | 45.16% |
| IAmJustAce vs Armor King | 17–12 | 58.62% |
| IAmJustAce vs Lidia | 14–14 | 50.00% |
| IAmJustAce vs Jack-8 | 9–17 | 34.62% |
| IAmJustAce vs Clive | 11–14 | 44.00% |
| IAmJustAce vs Leo | 10–14 | 41.67% |
| IAmJustAce vs Zafina | 8–16 | 33.33% |
| IAmJustAce vs Lars | 9–14 | 39.13% |
| IAmJustAce vs Shaheen | 8–9 | 47.06% |
| IAmJustAce vs Kuma | 6–11 | 35.29% |
| IAmJustAce vs Anna | 7–10 | 41.18% |
| IAmJustAce vs Leroy | 6–9 | 40.00% |
| IAmJustAce vs Claudio | 5–9 | 35.71% |
| IAmJustAce vs Panda | 3–6 | 33.33% |
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.