The numerical value is just flavor, like you said numbers are arbitrary.  The negate death is also flavor, from out right "death" spells.  It was a thing in the game and never really ran into anyone trying to straight up use a death spell. But it was achieved with added effect on armor conjoined with say...destruct in the game.  This character is from a future scenario, around 800 years where the magitech has evolved.

But yes light and dark would be nulled.  All other elements hit normally though.