I'm not sure I understood your questions, but if you are asking if there are other Marriott properties in Hong Kong other than the JW, then yes there are 2 others.
The Renaissance in Kowloon and the Renaissance in Wanchai. They are pretty much across from each other with the water seperating them. I personally prefer the Kowloon one but thats due to location. The JW is the best Marriott property in my opinion.