What is so clownish about these statements by Draghi? Everything. For starters, he does not realise the root cause of the price deflation in Japan. First there was a credit growth slowdown, which was followed by a protracted credit deflation. The price deflation was only a consequence of the credit deflation—not the starting point of Japan's economic stagnation.
Note that Japan experienced price deflation only in 1995. The banking crisis had been already underway by that time, and the credit growth slowdown was visible to the naked eye.