I think all of you have some good points.
The only thing that is similar with the AvP movies is the shape of the scar.
Now, when you look at how the Predators react to this scar, you see some differences.
In the films, the Elder simply gave Alex a spear and left her.
In the comics, Machiko Noguchi got accepted as an equal and lived amongst them.
Now, Elden also got accepted by Ahab, when you see the moment when Elden calls Ahab his "brother" and Ahab gives Elden that little Predator hug. That to me feels like it's closer to the comics than the movies.
So, in the end, you all may be right that the F&S comics took elements from comics and the films (but a bit more from the comics regarding to how Ahab reacted to the scar by seemingly accepting Elden rather than just sparing him and giving him a gift like with Alex in the film.)