I like nice examples of both working and show lines, so my intent here isn't to show a preference for one or the other (though Murph is primarily of the "working" variety) but merely to highlight the difference. I think the best way to do that is through videos. The first video shows a well-know and quite lovely show Doberman named CJ strutting it out in the ring. CJ will show you a great of example of a show line dog, doing what show line dogs are bred to do:
She's really quite a beautiful dog!
The next video will show a working line dog doing what working line dogs were bred to do. Because so few people understand Schutzhund, I feel like I have to qualify a few things first. This isn't a mean sport where dogs are forced to attack people and become dangerous. Quite the opposite. For the dogs, this is a fun game that they've learned through careful training (about 95% or more +R, btw) over many months to a few years. Schutzhund trainers are some of the best in the world, and their dogs are almost always beloved family pets. The dogs aren't "attacking a person", they are going for the sleeve which they've come to know as a reward for obedience. The high prey drive inherent in these dogs means that a toy is often more of a reward than food. The stick is NOT for hitting the dog, but is known as a "clatter stick". It is usually hollow bamboo slit lengthwise, and its intention is to make a lot of noise. The example I'm going to show is the "protection" phase of competition, but know that a Schutzhund-trained dog is also highly proficient in obedience and in tracking. I don't know the woman or the dog in the following video, but I chose it because the pair of them approximate Murphy and I proportionally (I think Murph might be a smidge taller), the dog looks a lot like Murph's dad, and his gormy mannerisms are very "Murph like" :-) Please take note of the amazing obedience on this dog, despite his obvious power and energy:
As you can see, they are very, very different animals, each having a very different mindset and impact on the world around them. Comparing the two is like comparing apples and oranges (ergo the title of this post, lol). I hope this helps, and feel free to ask questions!