Yes, there is a difference. Notice the following photographs. Pet quality chins are shown first followed by show quality. Specifics that chins are judged on include clarity, density, pattern, texture, veiling, strength, length, volume, size and conformation. No one chinchilla will have all of these but those that go and show are learning what their animals are lacking and how to improve their herd.
This is an example of a pet quality chinchilla. Before you decide that you want to get into breeding , go to a few shows. Look, learn and observe, this will help you to choose the best "building blocks" for your herd.
The biggest mistake I see people making is jumping into breeding and throwing just any two animals together. They want to make pretty colors verses starting with standard grays which should be the basis of all herds.