The prayer rug has a distinct design compared to other rugs. At its top, there are two arches that depict the mihrab shape. Unlike other rugs, it does not have fringe in its four corners. 

 Because of the horse, I think we Muslims cannot pray on it. Thus, my question, was it intended for people to pray on it? 

 No. The prayer rugs have different form and you can't compare artistic rugs like this one.