If you'd want to make it exact, it'd need to be a composite bow, I guess. But this bow will do it also. On the other side, such a composite bow could be taken from a horse archer unit, I guess. If I remember correctly, Aranor said that he gave his horse archer unit I partially based my hun horse archer (Tarkan main unit) on, a composite bow. But could be that there is nothing special about that bow compared to the default horse archers bow. Anyways, the current bow would be good enough, but if it doesn't mean too much work for you, you might give the other one a shot, too.