This actually is a stupid discussion. Of course, any cameras, given the right circumstance, can produce images that shine.
I am taking a contrarian view here. For most circumstances, better cameras (bigger sensor, bigger negative, bigger lens with better quality glass for light gathering etc) will take better pictures.
For the average photographer, a better camera can usually produce a better image. The very selected few gifted ones, give them anything, they will produce masterpieces. The few lucky ones, will produce masterpieces with a disposable camera.
An analogy. Why do we have to study, get a degree, and more post graduate degrees? Afterall, Bill Gates and Steve Jobs were both college drop outs! The founder of Microsoft and the founder of Apple are the equivalent of the gifted photographers. They do not need really need the university training, or the Hassy with a D-back for the gifted photographer, to create something great. The lucky photographers, well they are the equivalent of the lottery winners. LUCK.