| Mercilous vs Kazuya | 111–98 | 53.11% |
| Mercilous vs Jin | 105–79 | 57.07% |
| Mercilous vs Reina | 97–51 | 65.54% |
| Mercilous vs Bryan | 96–50 | 65.75% |
| Mercilous vs Steve | 67–62 | 51.94% |
| Mercilous vs Yoshimitsu | 80–45 | 64.00% |
| Mercilous vs Hwoarang | 83–39 | 68.03% |
| Mercilous vs King | 65–48 | 57.52% |
| Mercilous vs Dragunov | 58–51 | 53.21% |
| Mercilous vs Paul | 71–32 | 68.93% |
| Mercilous vs Heihachi | 42–52 | 44.68% |
| Mercilous vs Devil Jin | 43–41 | 51.19% |
| Mercilous vs Law | 53–29 | 64.63% |
| Mercilous vs Lili | 40–37 | 51.95% |
| Mercilous vs Lee | 38–36 | 51.35% |
| Mercilous vs Azucena | 34–29 | 53.97% |
| Mercilous vs Alisa | 31–31 | 50.00% |
| Mercilous vs Eddy | 27–29 | 48.21% |
| Mercilous vs Asuka | 35–17 | 67.31% |
| Mercilous vs Jun | 28–24 | 53.85% |
| Mercilous vs Claudio | 27–23 | 54.00% |
| Mercilous vs Fahkumram | 25–21 | 54.35% |
| Mercilous vs Nina | 29–16 | 64.44% |
| Mercilous vs Leroy | 20–22 | 47.62% |
| Mercilous vs Feng | 20–16 | 55.56% |
| Mercilous vs Victor | 22–14 | 61.11% |
| Mercilous vs Xiaoyu | 18–14 | 56.25% |
| Mercilous vs Jack-8 | 14–16 | 46.67% |
| Mercilous vs Lars | 22–8 | 73.33% |
| Mercilous vs Raven | 16–11 | 59.26% |
| Mercilous vs Zafina | 12–14 | 46.15% |
| Mercilous vs Clive | 15–11 | 57.69% |
| Mercilous vs Kuma | 15–7 | 68.18% |
| Mercilous vs Leo | 11–10 | 52.38% |
| Mercilous vs Shaheen | 8–11 | 42.11% |
| Mercilous vs Anna | 8–9 | 47.06% |
| Mercilous vs Panda | 6–8 | 42.86% |
| Mercilous vs Lidia | 4–9 | 30.77% |
| Mercilous vs Armor King | 0–4 | 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.