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Some parts of the breed standard don't affect the health of the dog, others might. If you are looking for a pet what you want to know is if it makes a difference to the health, and temperament of your dog, or any other qualities that might be important to you. The thing to know is that nearly all litters have at least some puppies that make wonderful pets but can't be successful in competition. The "champion bloodlines" might be of some help in evaluating the puppies if most of the recent generations have such evidence of success. Usually they will also explain why they have not been competing. A knowledgeable breeder would know that it isn't very meaningful and would explain how they have evaluated the sire and dam in the absence of competition. Someone who uses the term "champion bloodlines" is suggesting that you should be pleased about it. If there is no objective evaluation you will have to come up with another way of evaluating qualities that are important to you. The main advantage of looking to success in competition is that the qualities are evaluated by a more neutral party than the breeder.
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Success in competition helps you evaluate the health and temperament of the puppies, but is no guarantee.
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If the sire and dam had been successful in either the performance or conformation arena don't you think the breeder would be happy to mention it? Should this make a difference to you? Is there any reason you should care if the sire and dam were successful in competition? See above. When someone uses the term "champion bloodlines" it normally means that the sire and dam of the puppies has never been shown at all. Well they are from "Champion Bloodlines".
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