I assume this is quoted from the magnacut salt marketing material?
Personally I don't give a damn how they describe it. Living in Florida and having taken various Salt knives in and out of oceans and rivers and pools without so much as dripping them dry and having never found a speck of rust, I'm sold.
I just hope the Magnacut version isn't simply “almost as good so let's call it salt too”.
I wish someone would make a multi-tool fully out of whatever steel is in the Salt line.