Just curious, how did you do this comparison ?
It is based on the double occupancy cash discount on the most expensive room for a specific cruise exchange using the best week for each respective unit. First I look at how much II charges to book the same room with cash. Then I set the highest discount as the benchmark and 100%. Then each unit below is based on the percentage of that benchmark discount. All reservations were done between ~12-18 months out (II allows Marriott deposits up to 18 months out). I do not believe any trading power drops off within this range.
I am convinced that the cash discount for a cruise is directly related to the trading power of the unit. This list makes sense and is in line with some general testing. For example we were testing the visibility of a 2BR at Crystal Shores a few weeks ago. It used to be that a 3BR would trump a 2BR just about anywhere but during that test this was not the case. I was playing around with a 3BR at MGV and MPB where some reservations were not able to see the Crystal Shores but a 2BR Plat at MGV and MBP could see it.
I don't think everyone knowing the relative trading powers of the various Marriott's matters. I do not expect to find any secrets. I think whatever tweak they did recently equalized the trading power of various units to align with reality. For the most part you get what you pay for.
I would like to find a new benchmark so for anyone that has a good power unit and does not mind sharing I would like to record the discount and update my list. This analysis can only be done properly until other variables change.
The benchmark cruise I used is:
Caribbean - Eastern
April 2015
7 Night Caribbean Eastern
Carnival Cruise Lines
Carnival Conquest
April 12
2 Adults
Captain's Suite
I am very interested in knowing the Hawaii and HHI weeks.