I concur that those " beatiful points" are not arrowheads but more likely dart points for atlatl .I dont think they are overly large for darts .
I still waver on whether the embedded point is an arrowhead or not . It is not near the length of the other two points. I have used similar sized steel points with a long bow and arrow and would expect similar or better penetration . The angle of the embedded point indicates that it was launched from above or in a high arc , I suppose bow or atlatl could have done either .

Do think this hit on the animal brought it down or slowed it any ?

I inferred no negativity from any posts and hope none was implied in mine .