To get a FAA commercial you must hold a FAA PVT. The 61.75 “based on” counts for this purpose. It is just a paper shuffle. Then you would have to do the IR written test and a checkride and the commercial written and a checkride. If you have 1500 hours and an ICAO commercial you can go straight to the FAA ATP MEL by completing an ATP Certificate Training Program which takes about a week, passing the written and passing a checkride. So a question would be how close to 1500 hours are you?