Stat Wise I would say Crawdaunt because he has a pretty good Attack but bad Def and Sp.Def which is the same for Basculin except that Basculin has bad Attack.
Here is a moveset:
Crawdaunt @ Life Orb
EVs: 252 Defense 252 Special Defense and 6 Attack
Crunch: STAB + Good power and may lower foe's defense
CrabHammer: STAB + Good power + why have a crab without using its claws as hammers?!
Waterfall: if ingame i would suggest it + STAB
X-Scissor: Decent power+ covers grass weakness
HOPE THIS HELPED!