It is quite remarkable that this logic was set in direct contrast to Khan's vengeful passion.
In the end, however, both Spock and Khan were dead. How did their companions fare? Spock voluntarily gave his life for his companions lives and Khan took all the lives that were set about reaching Khan's personal goal.
Most people see love as a passion for the other. However, the highest form of love is to do something positive for/to another person for the others sake, not ourselves.
Jesus said, "No one has greater love than this, to lay down one’s life for one’s friends." (John 15:13)