When it comes to a solid swords dancer, I've never felt any inclination to use feraligatr over kabutops. Kabutops gets weak armour, secondary STAB, and better offensive stats while also being able to spin.
Where Gatr's true magic lies is dragon dance IMO. While some might argue that gatr is inferior to crawdaunt, I find the croc has a very good niche over crawdaunt, not only with better speed, but also with existent bulk. When sheer force is released, I think DDgatr will be a pretty big player in the metagame.
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