I understand that. Im trying to say you could not take the same picture with a gopro and not be able to tell the difference... maybe if we are just looking on computers. Even then the way the gopro handles the colors and dynamic range compared to a DSLR. But when you print them 10ft by 10ft such as the one attached below you might be able to tell the difference. If you where using it for personal use no question it would be dumb to buy a $2000 dollar housing.
That a gorgeous shot on the wall!