No, MAs are not the same thing as PCTs. I am an MA student, and MAs are trained to work in outpatient settings, i.e. doctor's offices. They get more training in medical office procedures, and do some clinical work like phlebotomy and vital signs. They take an exam and must be registered either through the AAMA (American Association of Medical Assistants) or the AMT (American Medical Technologists).
PCTs, on the other hand, are usually employed in inpatient settings like hospitals, rehab centers, etc. They are trained in basic nursing care like bed baths and the like, as well as stuff like phlebotomy and blood sugars. They take the Certified Nurse Assistant exam.
So basically, it's about where you want to end up. You can potentially become an MA and be employed as a PCT, but you may have to fight for it.
One last tip though: If you want to become an MA, be sure your school is accredited and not a diploma mill. Schools like Sanford Brown and so on are good to avoid.
Good luck in your education and job search