This model is not like the filter model, attenuation model, or Deutsch-Norman model which all deal in terms of selection. The Kahneman model is about the capacity of attention. This model looks at how attention is focused instead of when. Kahneman believes that arousal plays a role in our level of attention. The state of arousal could determine the capacity for attention. His model doesn't contradict other models of attention. His model could be supplemented with the other models to form a more complete model of attention.
This model is mentioned in the Cocktail Party Effect, check it out!