| Aihara vs Reina | 68–71 | 48.92% |
| Aihara vs Paul | 50–73 | 40.65% |
| Aihara vs Kazuya | 57–60 | 48.72% |
| Aihara vs Lili | 63–45 | 58.33% |
| Aihara vs Dragunov | 52–56 | 48.15% |
| Aihara vs Bryan | 47–57 | 45.19% |
| Aihara vs Hwoarang | 45–48 | 48.39% |
| Aihara vs Alisa | 41–50 | 45.05% |
| Aihara vs Jun | 54–37 | 59.34% |
| Aihara vs Asuka | 52–38 | 57.78% |
| Aihara vs King | 30–54 | 35.71% |
| Aihara vs Jin | 39–40 | 49.37% |
| Aihara vs Nina | 30–47 | 38.96% |
| Aihara vs Eddy | 35–41 | 46.05% |
| Aihara vs Law | 27–36 | 42.86% |
| Aihara vs Steve | 23–32 | 41.82% |
| Aihara vs Azucena | 22–32 | 40.74% |
| Aihara vs Victor | 24–27 | 47.06% |
| Aihara vs Yoshimitsu | 23–26 | 46.94% |
| Aihara vs Xiaoyu | 23–22 | 51.11% |
| Aihara vs Feng | 18–23 | 43.90% |
| Aihara vs Lee | 12–26 | 31.58% |
| Aihara vs Claudio | 11–22 | 33.33% |
| Aihara vs Leroy | 10–23 | 30.30% |
| Aihara vs Devil Jin | 8–23 | 25.81% |
| Aihara vs Leo | 10–21 | 32.26% |
| Aihara vs Jack-8 | 10–20 | 33.33% |
| Aihara vs Lars | 9–18 | 33.33% |
| Aihara vs Zafina | 6–19 | 24.00% |
| Aihara vs Shaheen | 13–8 | 61.90% |
| Aihara vs Raven | 5–9 | 35.71% |
| Aihara vs Kuma | 4–8 | 33.33% |
| Aihara vs Armor King | 5–2 | 71.43% |
| Aihara vs Miary Zo | 1–4 | 20.00% |
| Aihara vs Panda | 0–3 | 0.00% |
| Aihara vs Lidia | 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.