Titian Doge?

Does this look like a Titian to you? Vladimir Ostrovsky, director of the Museum of Western and Eastern Art in Odessa, Ukraine, claims that it is. The State Hermitage Museum in Russia has analysed the materials used in the painting and found the canvas and paints to be of the right period. But! This could be yet another example of wishful thinking. Painting a portrait of a doge was rather like painting a portrait of a king. I would expect more detail in the rich clothing and background from a master painter of that period. This looks too impressionistic. Perhaps a preliminary sketch in oils? By whom? And did he get the commission? And which doge is depicted?