Sumatran, Borneo or Moro???

[VVV]

I think Mabagani's idea about the blade originating from a spearhead is interesting.
I don't know much about Moro spearheads but I noticed that some Dayak spearheads also are flat with a flat tang.
Pict 1 is the X blade next to a Budiak and a Dayak spear.
Pict 2 is the Budiak and the X blade from the side.
Pict 3 is the Dayak spear and the X blade.
Are there any Moro spears that resembles this Dayak spear?
Ben/Dajak, I still think Borneo could be a possible origin even if this blade doesn't belong to any of the documented swords.
But I am open to more specific arguments why it's impossible that it ever could have been assembled in Borneo?

Michael