the majority of cruise critics rate the paul gaugin and Navigator as 5 not 6 star.
The top cat. cabins on the navigator are the standard cabin on the Mariner.
As far as bread pudding....HAL has a good one...
Radisson will make you one but puts its focus on cuisine above comfort food. HAL is good banquet food.... if you like HAL you will be blown away by Radisson. It is like comparing carrows to the Four seasons....