Not exactly selected. But, why does Gen Fu's 1P, that is faster than Leifang's 2H+K, tracks, and does more damage, get a stun and damage boost while Leifang's doesn't? Same goes for Busa's and Hayate's 2H+K for example.
Again, it's not only Leifang. It makes no sense that Christie's 2F+KP gets...