Differences
Eight Ball, you need to become familiar withthe Chicago Convention of I believe 1950. I do not think the Phillippines was a "Signatory State." All Signatory States are obligated to accept the Licenses and Medicals from other Signatory States. However, if you are for instance coming to India, to fly Indian Registered Aircraft, the DGCA has the right to accept or deny you licenses. I learned that lesson the hard way.
If I am wrong I stand corrected. I have spent a number of hours on the telephone over the past few weeks sorting this out. You can download a complete copy of the Chicago Convention and it's Annex 1 from the ICAO Website for $35 I believe.