Claims of Value
Claims of value inherently involve a judgment based on comparing and contrasting one position with another and assigning each a value of good or bad, better or worse. For example, "Danielle Steele is the best romance novelist of the last quarter century."
To build an argument on such a claim the criteria by which the judgment will be made as well as the manner in which the person, thing, situation or circumstance being assessed must be established. Elements similar to claims of fact, such as sales figures, publication statistics and awards will come into play.
For Danielle Steele to be judged the best romance novelist of the last quarter century, it has to be proven that she meets the established criteria for a good romance novelist and that she does it better than all other romance novelists from the same time period.