Asia-wank means Philippines becomes a part of the Chinese or Indian cultural sphere. Or part of the eastern half of Dar al-Islam. Either way, the "Philippines" does not exist, but rather something completely different. Perhaps a mere extension of a Bruneian or Banjarmasin hegemonic empire. Perhaps the southernmost tip of the Chinese cultural sphere. Perhaps both, considering how disparate the cultures of our nation were before the Spanish.
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As a nation, the Philippines was born in 1565 and reached its coming of age in 1898. Unfortunately, most label the centuries between these as mere "Spanish oppression". Which is incredibly unfair and unnuanced. There was oppression, yes, and it was a colony with all that that implies, but there was also a lot of history in which we were bound to the fates of the Spanish empire and Catholicism in East Asia, and through them the world at large. None of this would have happened without Spain.
If Nagasaki was the East Asian Rome, then Manila and Cebu were the Jerusalem and Antioch.
But anyway, that's stuff for historiography. We're talking about the region before 1565. So...
The only PoD I can think of is Sultan Bolkiah's invasion. All the other sources readily available just feel too unreliable. Like trying to figure out a historical timeline for King Arthur.