A large kitchen presents an opportunity for several different task areas for more than one cook. In that scenario, having ovens under the cooktop can create access problems. The situation will be amplified if this is a dual fuel range where the ovens are electric convection which cook faster and with more volume capability (cook on all shelves at once). Secondly, the range ovens do not offer many of the features available in other ovens. So before such a large investment is made, the cook(s) should critically look at how they will be using their kitchen and what new cooking techniques and equipment are available for the residential kitchen.
Most of the kitchens that we do use a 48" range and the Wolf has the largest amount of working space in the smaller oven compared to Viking. All burners of the Wolf have dual stacking flame capability and one burner has melting capability which is very convenient. No struggling with flame height. I'm not familiar with the other two brands.