| Mieszko vs Kazuya | 73–45 | 61.86% |
| Mieszko vs Jin | 59–56 | 51.30% |
| Mieszko vs Paul | 65–46 | 58.56% |
| Mieszko vs Hwoarang | 48–47 | 50.53% |
| Mieszko vs Dragunov | 52–39 | 57.14% |
| Mieszko vs Devil Jin | 40–43 | 48.19% |
| Mieszko vs Lili | 45–33 | 57.69% |
| Mieszko vs Lee | 46–30 | 60.53% |
| Mieszko vs Law | 40–33 | 54.79% |
| Mieszko vs King | 37–33 | 52.86% |
| Mieszko vs Bryan | 41–27 | 60.29% |
| Mieszko vs Reina | 34–24 | 58.62% |
| Mieszko vs Steve | 28–27–1 | 50.91% |
| Mieszko vs Yoshimitsu | 21–27 | 43.75% |
| Mieszko vs Asuka | 30–13 | 69.77% |
| Mieszko vs Xiaoyu | 27–15 | 64.29% |
| Mieszko vs Nina | 20–19 | 51.28% |
| Mieszko vs Feng | 24–13 | 64.86% |
| Mieszko vs Heihachi | 20–17 | 54.05% |
| Mieszko vs Eddy | 24–11 | 68.57% |
| Mieszko vs Azucena | 15–19 | 44.12% |
| Mieszko vs Victor | 14–20 | 41.18% |
| Mieszko vs Leo | 19–13 | 59.38% |
| Mieszko vs Jun | 19–12 | 61.29% |
| Mieszko vs Fahkumram | 13–17 | 43.33% |
| Mieszko vs Lars | 15–12 | 55.56% |
| Mieszko vs Anna | 15–12 | 55.56% |
| Mieszko vs Armor King | 13–14 | 48.15% |
| Mieszko vs Jack-8 | 14–12 | 53.85% |
| Mieszko vs Alisa | 12–14 | 46.15% |
| Mieszko vs Raven | 7–13 | 35.00% |
| Mieszko vs Zafina | 7–11 | 38.89% |
| Mieszko vs Claudio | 7–9 | 43.75% |
| Mieszko vs Shaheen | 7–9 | 43.75% |
| Mieszko vs Kuma | 3–12 | 20.00% |
| Mieszko vs Leroy | 8–5 | 61.54% |
| Mieszko vs Lidia | 3–7 | 30.00% |
| Mieszko vs Clive | 3–5 | 37.50% |
| Mieszko vs Miary Zo | 1–2 | 33.33% |
| Mieszko vs Panda | 0–2 | 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.