The mapping to the PD here is that defection is continuous rather than binary.
In the PD increasing defection level from 0 to 1 never lowers utility. In this game increasing what you call the continuous measure of defection always lowers utility except when your defection is the largest.
In the PD increasing defection level from 0 to 1 never lowers utility. In this game increasing what you call the continuous measure of defection always lowers utility except when your defection is the largest.