So, a while back I was asking about if manual defibrillators were still in use, and, in case you're curious, I did find an answer: yes. A human can ascertain a rhythm faster than an AED, so paramedics and other emergency medicine professionals are still trained to interpret ECGs and use manual defibs. Note that EMTs (and generally AEMTs, iirc) *aren't* trained to do so, and only use AEDs. So, fun emergency medicine fact of the day, I guess.
Another fun emergency medicine fact of the day: yes, there's a difference between EMTs and paramedics. Paramedics have much more training and can do more drastic interventions, including intubation, IV drips, and, as mentioned, use of a manual defibrillator. They can also administer more medications than EMTs can. EMTs are limited to OTC meds, auto-injectors, and *helping* with prescriptions, while paramedics can administer much more (generally under physician guidance).