| Grandpa Feng vs Kazuya | 280–194 | 59.07% |
| Grandpa Feng vs Bryan | 238–230 | 50.85% |
| Grandpa Feng vs Jin | 237–205 | 53.62% |
| Grandpa Feng vs Reina | 166–184 | 47.43% |
| Grandpa Feng vs Steve | 190–157 | 54.76% |
| Grandpa Feng vs Hwoarang | 175–164 | 51.62% |
| Grandpa Feng vs King | 158–179 | 46.88% |
| Grandpa Feng vs Paul | 176–142 | 55.35% |
| Grandpa Feng vs Law | 179–138 | 56.47% |
| Grandpa Feng vs Yoshimitsu | 173–132–1 | 56.72% |
| Grandpa Feng vs Heihachi | 149–126 | 54.18% |
| Grandpa Feng vs Dragunov | 133–137 | 49.26% |
| Grandpa Feng vs Lee | 122–132 | 48.03% |
| Grandpa Feng vs Lars | 115–120 | 48.94% |
| Grandpa Feng vs Feng | 156–75 | 67.53% |
| Grandpa Feng vs Lili | 107–123 | 46.52% |
| Grandpa Feng vs Xiaoyu | 132–87 | 60.27% |
| Grandpa Feng vs Jun | 106–106 | 50.00% |
| Grandpa Feng vs Asuka | 107–85 | 55.73% |
| Grandpa Feng vs Nina | 100–88 | 53.19% |
| Grandpa Feng vs Leo | 88–96 | 47.83% |
| Grandpa Feng vs Azucena | 104–80 | 56.52% |
| Grandpa Feng vs Devil Jin | 90–91 | 49.72% |
| Grandpa Feng vs Armor King | 76–103 | 42.46% |
| Grandpa Feng vs Raven | 81–91 | 47.09% |
| Grandpa Feng vs Lidia | 59–87 | 40.41% |
| Grandpa Feng vs Victor | 53–91 | 36.81% |
| Grandpa Feng vs Leroy | 77–56 | 57.89% |
| Grandpa Feng vs Alisa | 66–61 | 51.97% |
| Grandpa Feng vs Eddy | 58–67 | 46.40% |
| Grandpa Feng vs Claudio | 68–56 | 54.84% |
| Grandpa Feng vs Zafina | 54–62 | 46.55% |
| Grandpa Feng vs Clive | 51–62 | 45.13% |
| Grandpa Feng vs Shaheen | 40–56 | 41.67% |
| Grandpa Feng vs Jack-8 | 39–52 | 42.86% |
| Grandpa Feng vs Fahkumram | 48–43 | 52.75% |
| Grandpa Feng vs Kuma | 32–45 | 41.56% |
| Grandpa Feng vs Anna | 41–32 | 56.16% |
| Grandpa Feng vs Panda | 7–26 | 21.21% |
| Grandpa Feng vs Miary Zo | 1–7 | 12.50% |
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.