A straight blade or a curved one?

[Battara]

Originally Posted by MABAGANI

In a recent documentary I helped with on the Filipino martial arts, there was a segment about Moro blades in which Cecil Quirino makes a statement from a study about the depth of penetration in a vertical cut from collar bone down through the chest, the order of cutting ability was the kris, kampilan, then the barung which could cut the deepest.
The kris is an example of a forward leaning sword, the kampilan a backward lean, and the barung a curved short sword.

Mabagani, would you please site (or email me) the reference from which Cecil quoted?