Thanks for raising a point. For a description of the Maranao Sagayan war dance, kindly refer to N. Timan Madale's "Maranao Forms of Oral Literature" p. 330 of Dialogue for Development (Francisco N. Demetrio, ed), Xavier University, CDO, 1975, p. 330. There is also a dance description of the Maranaw Sagayan by Dr. Mamitua Saber from the book, "Philippine Folk Dances and Songs", Bureau of Public Schools, 1972, pp. 144-145. Thanks.
Sayagan is in Meranao culture too. This can be found in our centuries and centuries old famous literature called Darangen. In fact Meranao Kasagayan is even more elaborate than your Maguindanaon Sagayan. Go get yourself some education.