There are breakdowns of how a character should fare against another, A.K.A. theorized matchups. For example, Fox vs. Puff is debated 55:45 in Fox's favor, or maybe even 45:55 in Puff's. However, not everyone plays the same way with one character against another, you may do better in a matchup said to be bad for you. That being said, what is YOUR worst matchup?