Kirby's best matchup, because Sun Salutation cannot hit a Kirby that is crouching. As such, the neutral is a stalemate: at the typical distance, Header also will not hit Kirby. While Kirby has slightly less range, his hitboxes are less awkward, and so it's easier for him to space in this matchup. Another thing that makes this a horrible matchup is Kirby's punish game; if he gets an Inhale, he pretty much wins the game. He can just retreat to the opposite side of the stage, charge his own Sun Salutation, and crouch to avoid WFT's SS. John Numbers actually thought this matchup was a -4 in one of his matchup charts.
Kirby's best matchup, because Sun Salutation cannot hit a Kirby that is crouching. As such, the neutral is a stalemate: at the typical distance, Header also will not hit Kirby. While Kirby has slightly less range, his hitboxes are less awkward, and so it's easier for him to space in this matchup. Another thing that makes this a horrible matchup is Kirby's punish game; if he gets an Inhale, he pretty much wins the game. He can just retreat to the opposite side of the stage, charge his own Sun Salutation, and crouch to avoid WFT's SS. John Numbers actually thought this matchup was a -4 in one of his matchup charts.