Slashing debuff is not utility you can attribute to a Samurai for the simple reason that it's required for a NIN to maximize their own damage. So to say SAM has raid utility when it's paired with something else that has said utility is worth nothing more than a laugh.
After all, unlike Samurai, NIN is in fact mandatory and has a slashing debuff with much higher effective uptime, making Samurai redundant at best and worthless at worst.
