Just like JFK?
JFK had his flaws, but as a President he had a great sense of propriety and common sense. As a candidate for the Presidency he would have been appalled at the speech Obama gave in Germany and, even though JFK was a member of the American aristocracy, he would have seen it as arrogant and presumptious as a candidate.
There is a huge difference between a US Senator, even one who is a candidate of the USA, presuming to be the new messiah and promising to be savior to the world, and a presentation from the lawfully elected President of the United States making a good will address in a country he is visiting.