Lucina's lack of a tipper means that she plays entirely differently to Marth despite having an identical moveset. I don't even consider Lucina, Ken, and Chrom as Echoes unlike the games because of their more drastic gameplay alterations that completely change how you play as them compared to Marth, Ryu, and Roy respectively. It's telling that Lucina, Ken, and Chrom all have their own separate spots on the Ultimate tier list while Dark Samus, Daisy, Dark Pit, and Richter are all grouped with their base fighter.