Literally know nothing about the Dianii, so I am only going to pop in if I see something that needs correcting regarding Yautja.
Gyaos wrote:Im leaning towards the Dianii warrior only because he has experience in killing things several times his own size.
Not entirely true. You don't remember the countless trophies hanging up in the spaceship in Predator 2?
That skull would be about half the size of a fully grown man, if not bigger. That means the creature it belonged to would have been much bigger than the Yautja hunting it. This is also not including Xenomorph Queens who are likewise much, much bigger than a single Yautja.