Only seaplanes or purpose-built amphibious aircraft and even then the landing requires skill and technique. Conventional aircraft of any size usually disassemble themselves into twisted aluminium alloy and shattered cabin trimmings unless the pilot(s) have incredible skill and an equal amount of luck. This doesn't occur very often.
Hitting water at high speed is like hitting concrete at high speed. I'd have more faith in those safety cards if they showed the outer wings ripped off, the engine-pods missing and the fuselage in several pieces with some obviously drowned bodies floating face-down in the water.
Pax to FA: "Excuse me Miss, do these planes crash often?"
FA to Pax: "No sir, just once usually does it!"