Well, argument about loosing two in a row to Miyabiyama is not a good one IMO. Being former Ozeki and probably Sekiwake soon, he is a difficult opponent. Besides, Takanohana lost three in a row to Tosanoumi - so what?
Of course, even tough I'm a big fan of Tochiazuma, I can see clearly that he is not going to be a great Yokozuna. But could he ever get the tsuna, it would make me extremely happy.