| Brennan vs Steve | 16–3 | 84.21% |
| Brennan vs Jin | 9–5 | 64.29% |
| Brennan vs Law | 5–5 | 50.00% |
| Brennan vs Bryan | 3–6 | 33.33% |
| Brennan vs Kazuya | 5–4 | 55.56% |
| Brennan vs Kuma | 2–4 | 33.33% |
| Brennan vs Devil Jin | 5–0 | 100.00% |
| Brennan vs Leo | 4–1 | 80.00% |
| Brennan vs Heihachi | 3–2 | 60.00% |
| Brennan vs Anna | 3–2 | 60.00% |
| Brennan vs Paul | 4–0 | 100.00% |
| Brennan vs King | 2–1 | 66.67% |
| Brennan vs Yoshimitsu | 3–0 | 100.00% |
| Brennan vs Xiaoyu | 3–0 | 100.00% |
| Brennan vs Alisa | 2–1 | 66.67% |
| Brennan vs Jun | 3–0 | 100.00% |
| Brennan vs Hwoarang | 0–2 | 0.00% |
| Brennan vs Jack-8 | 0–2 | 0.00% |
| Brennan vs Panda | 2–0 | 100.00% |
| Brennan vs Victor | 2–0 | 100.00% |
| Brennan vs Fahkumram | 2–0 | 100.00% |
| Brennan vs Asuka | 1–0 | 100.00% |
| Brennan vs Feng | 1–0 | 100.00% |
| Brennan vs Lili | 1–0 | 100.00% |
| Brennan vs Dragunov | 1–0 | 100.00% |
| Brennan vs Nina | 1–0 | 100.00% |
| Brennan vs Lee | 0–1 | 0.00% |
| Brennan vs Zafina | 1–0 | 100.00% |
| Brennan vs Reina | 0–1 | 0.00% |
| Brennan vs Eddy | 0–1 | 0.00% |
| Brennan vs Clive | 1–0 | 100.00% |
| Brennan vs Armor King | 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.