I know the Malay of which you speak, and those are some nice birds. There are many forms of Asil. Most people agree that the Malay, as it is called in this country is a derivation of the South Indian Asil, sometimes called the Kulang. Names were easy to throw around and labels stuck pretty tight sometimes, back when people started seeing these different birds. Basically, you start in Pakistan and you have Asil, Indian Asil, and they turn into Thai gamefowl. Ga Noi in Viet Nam and finally Shamo in Japan. Shamo came from birds that were from Thailand, historically. So in that area there are different varieties but with lot's of similarities. Also the Brazilians. developed from Imported Shamo a long time ago and the Cubalayas. From what I've read, Saipans were Shamos gone wild, and while a little unique, the main line died out in this country and nobody really knows where the hatchery strains came from. Some would say that the Madagascar Game is related to the group and some also believe that that is where the Naked Necks came from.
My Asils are Pakistani, and only get around six pounds, somewhat slow growing, but ample breast meat and they taste like pheasant or grouse to me. They are the backbone of my chick rearing team. I have some crosses planned with those to try and make something along the lines of Cornish game hen.