Feraligatr vs Daikenki
Johto vs Isshu. Feraligatr and Samurott have certain similarities. They're both offensive Pokemon, they're both Water Starters, they're both monotype and they both pack quite a punch from the physical side. Differences? Feraligatr is bulkier and faster, Samurott is made for mixed sweeping.
Who's more useful?
Who do you prefer?
I'mma go with Feraligatr here, purely out of nostalgia. Totodile was my very first Pokemon and as such, Feraligatr's always had a special place in my heart. Also? It can learn Swords/Dragon Dance, has better Atk stat and is faster than Samurott. Throw the better Dream World Ability to the mix and you have a winner right here. Samurott, in my opinion, fails to stand out from the Water type crowd, and that's his biggest problem.