| Quantum vs King | 48–45 | 51.61% |
| Quantum vs Jin | 53–38 | 58.24% |
| Quantum vs Kazuya | 45–35 | 56.25% |
| Quantum vs Bryan | 29–32 | 47.54% |
| Quantum vs Reina | 30–27 | 52.63% |
| Quantum vs Hwoarang | 19–36 | 34.55% |
| Quantum vs Yoshimitsu | 22–31 | 41.51% |
| Quantum vs Paul | 22–30 | 42.31% |
| Quantum vs Steve | 23–28 | 45.10% |
| Quantum vs Xiaoyu | 23–27 | 46.00% |
| Quantum vs Eddy | 17–31 | 35.42% |
| Quantum vs Law | 24–19 | 55.81% |
| Quantum vs Lili | 20–22 | 47.62% |
| Quantum vs Dragunov | 15–26 | 36.59% |
| Quantum vs Jun | 19–20 | 48.72% |
| Quantum vs Asuka | 15–18 | 45.45% |
| Quantum vs Victor | 18–15 | 54.55% |
| Quantum vs Feng | 11–20 | 35.48% |
| Quantum vs Leroy | 15–14 | 51.72% |
| Quantum vs Azucena | 15–13 | 53.57% |
| Quantum vs Leo | 15–12 | 55.56% |
| Quantum vs Lee | 12–15 | 44.44% |
| Quantum vs Alisa | 14–10 | 58.33% |
| Quantum vs Raven | 7–15 | 31.82% |
| Quantum vs Claudio | 12–9 | 57.14% |
| Quantum vs Heihachi | 15–4 | 78.95% |
| Quantum vs Devil Jin | 8–9 | 47.06% |
| Quantum vs Lars | 7–9 | 43.75% |
| Quantum vs Nina | 4–12 | 25.00% |
| Quantum vs Jack-8 | 8–7 | 53.33% |
| Quantum vs Lidia | 4–6 | 40.00% |
| Quantum vs Shaheen | 4–3 | 57.14% |
| Quantum vs Kuma | 4–1 | 80.00% |
| Quantum vs Zafina | 4–0 | 100.00% |
| Quantum vs Fahkumram | 3–1 | 75.00% |
| Quantum vs Panda | 2–0 | 100.00% |
| Quantum vs Armor King | 1–1 | 50.00% |
| Quantum vs Miary Zo | 2–0 | 100.00% |
| Quantum vs Clive | 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.