Point taken, Lake, but it seems to me that one of the points of the parable was to contrast two different kinds of 'fairness': adherence to an agreement, and work-pay equivalence. The workers protested that those that did less work got the same pay as those that did, but the owner protested that they accepted the deal to work from an early hour to a later for a certain amount of money as 'fair' and had no grounds to complain about others receiving higher work-to-pay ratios.

Neither involves equal division of anything.