| SwampDonkeyy vs Kazuya | 231–218 | 51.45% |
| SwampDonkeyy vs King | 182–193 | 48.53% |
| SwampDonkeyy vs Jin | 209–156 | 57.26% |
| SwampDonkeyy vs Bryan | 161–149 | 51.94% |
| SwampDonkeyy vs Reina | 154–134 | 53.47% |
| SwampDonkeyy vs Heihachi | 128–158 | 44.76% |
| SwampDonkeyy vs Armor King | 126–159 | 44.21% |
| SwampDonkeyy vs Steve | 142–122–1 | 53.79% |
| SwampDonkeyy vs Law | 120–142 | 45.80% |
| SwampDonkeyy vs Hwoarang | 128–125 | 50.59% |
| SwampDonkeyy vs Paul | 117–93–1 | 55.71% |
| SwampDonkeyy vs Dragunov | 105–106 | 49.76% |
| SwampDonkeyy vs Clive | 93–108 | 46.27% |
| SwampDonkeyy vs Asuka | 99–101 | 49.50% |
| SwampDonkeyy vs Lee | 104–89 | 53.89% |
| SwampDonkeyy vs Jun | 95–80 | 54.29% |
| SwampDonkeyy vs Yoshimitsu | 89–83 | 51.74% |
| SwampDonkeyy vs Azucena | 90–76 | 54.22% |
| SwampDonkeyy vs Fahkumram | 85–75 | 53.12% |
| SwampDonkeyy vs Devil Jin | 74–79 | 48.37% |
| SwampDonkeyy vs Feng | 65–83 | 43.92% |
| SwampDonkeyy vs Lili | 70–70 | 50.00% |
| SwampDonkeyy vs Lars | 61–73 | 45.52% |
| SwampDonkeyy vs Xiaoyu | 62–61 | 50.41% |
| SwampDonkeyy vs Anna | 59–63 | 48.36% |
| SwampDonkeyy vs Nina | 61–49 | 55.45% |
| SwampDonkeyy vs Eddy | 61–47 | 56.48% |
| SwampDonkeyy vs Jack-8 | 47–53 | 47.00% |
| SwampDonkeyy vs Lidia | 48–51 | 48.48% |
| SwampDonkeyy vs Leroy | 46–51 | 47.42% |
| SwampDonkeyy vs Leo | 44–51 | 46.32% |
| SwampDonkeyy vs Raven | 44–49 | 47.31% |
| SwampDonkeyy vs Victor | 41–48–1 | 46.07% |
| SwampDonkeyy vs Claudio | 36–48 | 42.86% |
| SwampDonkeyy vs Alisa | 27–52 | 34.18% |
| SwampDonkeyy vs Miary Zo | 37–39 | 48.68% |
| SwampDonkeyy vs Kuma | 38–27 | 58.46% |
| SwampDonkeyy vs Zafina | 27–25 | 51.92% |
| SwampDonkeyy vs Shaheen | 13–23 | 36.11% |
| SwampDonkeyy vs Panda | 14–17 | 45.16% |
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.