Of course agents try to be fair and are nice to the buyer since they want to make a sale. But because they are bound by the law of Agency and their Code of Ethics, they can only do so much without jeopardizing their license to practice. For instance, traditional agents cannot tell you how much they feel a certain piece of property is worth, or how to negotiate the best purchase price. In this case "technically" means legally, and if the seller has representation, shouldn't you? 

As a Buyer's Agent, we always negotiate in the best interest of the buyer.