The text “guaranteed crit with +160% Damage” should be replaced with “guaranteed crit with +160% crit damage”
The distinction that the +30/80/160% damage is added to your crit damage is necessary as there are diminishing returns for players using high critical hit damage modifiers (e.g. Final Strike for my Sorceress).
Thus, the +160% which is presumed to be a 2.6x multiplier is closer to a 1.3x-1.4x multiplier for my skills with the Final Strike tripod.