| Iwasawas vs Reina | 112–50 | 69.14% |
| Iwasawas vs Kazuya | 89–59 | 60.14% |
| Iwasawas vs Paul | 84–58 | 59.15% |
| Iwasawas vs King | 64–58 | 52.46% |
| Iwasawas vs Dragunov | 61–51 | 54.46% |
| Iwasawas vs Bryan | 62–46 | 57.41% |
| Iwasawas vs Jin | 74–31 | 70.48% |
| Iwasawas vs Steve | 57–35–1 | 61.96% |
| Iwasawas vs Lili | 38–45 | 45.78% |
| Iwasawas vs Hwoarang | 43–31 | 58.11% |
| Iwasawas vs Asuka | 24–45 | 34.78% |
| Iwasawas vs Jun | 31–26 | 54.39% |
| Iwasawas vs Alisa | 32–23 | 58.18% |
| Iwasawas vs Devil Jin | 34–18 | 65.38% |
| Iwasawas vs Claudio | 18–32 | 36.00% |
| Iwasawas vs Xiaoyu | 31–17 | 64.58% |
| Iwasawas vs Victor | 23–25 | 47.92% |
| Iwasawas vs Lidia | 24–24 | 50.00% |
| Iwasawas vs Heihachi | 21–25 | 45.65% |
| Iwasawas vs Fahkumram | 23–21 | 52.27% |
| Iwasawas vs Lars | 20–20 | 50.00% |
| Iwasawas vs Feng | 17–22 | 43.59% |
| Iwasawas vs Lee | 21–18 | 53.85% |
| Iwasawas vs Yoshimitsu | 16–20 | 44.44% |
| Iwasawas vs Azucena | 17–18 | 48.57% |
| Iwasawas vs Leo | 12–17 | 41.38% |
| Iwasawas vs Law | 9–19 | 32.14% |
| Iwasawas vs Jack-8 | 15–12 | 55.56% |
| Iwasawas vs Kuma | 12–11 | 52.17% |
| Iwasawas vs Leroy | 8–13 | 38.10% |
| Iwasawas vs Raven | 8–13 | 38.10% |
| Iwasawas vs Nina | 9–11 | 45.00% |
| Iwasawas vs Anna | 13–7 | 65.00% |
| Iwasawas vs Shaheen | 10–9 | 52.63% |
| Iwasawas vs Zafina | 7–10 | 41.18% |
| Iwasawas vs Eddy | 6–9 | 40.00% |
| Iwasawas vs Clive | 8–2 | 80.00% |
| Iwasawas vs Panda | 3–4 | 42.86% |
| Iwasawas vs Armor King | 1–2 | 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.