The difference is the 20 minutes spent in the field trying to resuscitate.
That's not what the excerpt says:
If there are no signs of breathing or a pulse, EMS will continue to perform resuscitation for at least 20 minutes, the EMS memo said. If the patient is stabilized after the period of resuscitation, the patient would then be transported to a hospital. If the patient is declared dead at the scene or if [after the aforementioned 20 minutes of continued resuscitation] no pulse can be restored, paramedics will not no longer transport the body to the hospital.
I agree that the excerpt needs clarification - but your interpretation is not warranted, I feel.
Regards,