I would not say so - it is just more inline with the new pricing structure, and probably easier to program - take the lowest value versus averaging all 5 nights then deduct the average cost of a night - the latter can cause even more confusion as the deduction would be "neither here nor there" due to it is an average which can contain all 3 prices. The lowest cost being free while not as generous as before, it is very easy to understand and very readily be seen, if one pays attention.