I'd be willing to bet that the eastern coyote will come to any and every call that the western coyote will! The coyote doesn't sit there and desipher what sound he is hearing and he doesn't come only if he recognizes the sound. The coyote only hears a distress as exactly that, something that is distressed that could be a meal. The coyote doesn't have the logic to come only to a callwhen he knows what the sound is!!
We have used wood pecker distress where there were no trees, for example. No trees, and no woodpeckers! We have used pig distress, where there were no pigs!
True, some calls will work better than others. Heck, even between two guys that use the same call, one may LOVE it and have a lot of success with it, where as the other guy may hate it because it seems to "never" work for him. Go figure. Is the call to blame, or is it the caller! All this in the same topography!