| Armstrong vs Kazuya | 36–41 | 46.75% |
| Armstrong vs Jin | 30–35 | 46.15% |
| Armstrong vs Lili | 27–28 | 49.09% |
| Armstrong vs Steve | 18–30 | 37.50% |
| Armstrong vs Hwoarang | 19–26 | 42.22% |
| Armstrong vs Dragunov | 15–29 | 34.09% |
| Armstrong vs Bryan | 24–19 | 55.81% |
| Armstrong vs King | 13–29 | 30.95% |
| Armstrong vs Reina | 26–16 | 61.90% |
| Armstrong vs Law | 16–25 | 39.02% |
| Armstrong vs Jun | 19–21 | 47.50% |
| Armstrong vs Victor | 20–12 | 62.50% |
| Armstrong vs Lars | 19–12 | 61.29% |
| Armstrong vs Devil Jin | 8–21 | 27.59% |
| Armstrong vs Fahkumram | 10–16 | 38.46% |
| Armstrong vs Yoshimitsu | 12–13 | 48.00% |
| Armstrong vs Asuka | 13–12 | 52.00% |
| Armstrong vs Eddy | 9–16 | 36.00% |
| Armstrong vs Leo | 4–20 | 16.67% |
| Armstrong vs Xiaoyu | 10–9 | 52.63% |
| Armstrong vs Paul | 10–8 | 55.56% |
| Armstrong vs Shaheen | 8–9 | 47.06% |
| Armstrong vs Nina | 9–8 | 52.94% |
| Armstrong vs Feng | 6–10 | 37.50% |
| Armstrong vs Alisa | 8–8 | 50.00% |
| Armstrong vs Lee | 7–8 | 46.67% |
| Armstrong vs Raven | 3–10 | 23.08% |
| Armstrong vs Claudio | 2–10 | 16.67% |
| Armstrong vs Lidia | 6–5 | 54.55% |
| Armstrong vs Leroy | 4–6 | 40.00% |
| Armstrong vs Azucena | 3–7 | 30.00% |
| Armstrong vs Anna | 3–6 | 33.33% |
| Armstrong vs Zafina | 5–3 | 62.50% |
| Armstrong vs Jack-8 | 1–6 | 14.29% |
| Armstrong vs Kuma | 0–7 | 0.00% |
| Armstrong vs Heihachi | 2–1 | 66.67% |
| Armstrong vs Clive | 0–3 | 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.