Hi johnnyjuice99,
There are too many unknowns, variables, and differences in personal preferences to use the advice or feedback of others in a theoretical mattress configuration as any sort of a reliable guideline for how one product might feel for you versus someone else.
With that being said, the layers of latex closest to you will have the greatest impact upon your overall surface comfort, and a 3" upper plush layer versus a 2" upper plush layer, assuming the layers are the same ILD and style of latex, will be softer feeling, in just the same manner that a 3" latex topper has a more plush comfort than a 2" latex topper made of the exact same material.
If you’re interested, there is more information about primary or “deep” support and secondary or “surface” support and their relationship to firmness and pressure relief and the “roles” of different layers in a mattress in post #2 here and in post #4 here that may also be helpful in clarifying the difference between “support” and “pressure relief” and “feel”.
Phoenix