Republicans and Democrats politicians are called names all the time. It's their job.
The funniest part is, he's even wrong about that. Europe doesn't like him either.
A Popular Obama Heads to G20 | Pew Research Center
Obama remains personally popular and has consistently received much higher confidence ratings over the course of his presidency than his predecessor George W. Bush. And he is better regarded than other current world leaders. Only Angela Merkel comes close to the breadth of Obama’s popularity. But even in Europe, a Pew Research poll last year found the American president getting higher ratings than the German chancellor in seven out of eight major European nations. In other parts of the world, more citizens expressed confidence in Obama than Merkel for the most part.
I think that europeans hate Republicans more than they love Obama. They see Republicans (and the media has a lot to do with it) as warmongers, intolerant, selfish and extremely religious people. Since politicial parties in Europe tend to be very monolithic, they believe that all Republicans are like Bush, Cheney... or those crazy guys they occasionally hear about (like Todd Akin).
In HuffPost you can read 200 messages saying that german conservatives would be on the left of the most left-wing Democrats. Really? Not so fast.
Angela Merkel Wins German Elections
Then, why are the european HuffPost editions (in french, spanish, etc) so hard left-wing?
OK, all europeans (both successful and not so successful countries) have universal health care, education, jobless benefits... Because virtually 100% of the population demand those things.
Unions? Southern Europe is strongly unionized too. Italian Fiat recently reached an agreement with 7 unions (yes, seven!), excluding the largest one (a communist-leaning union). Each italian union has its own political ideology and flags, calls separate strikes, etc. So it's not about having strong or weak unions but about a culture of confrontation (Club Med) vs. a culture of collaboration (Central and Northern Europe).
But there are other issues where US liberals would be at odds with many moderates and conservatives in Europe: austerity, illegal immigration and amnesty, abortion, gay marriage, minimum wages, balanced budgets... even taxation, with most centre-right european governments raising the VAT and other "regressive" indirect taxes.
In 2009, when the german GDP was literally collapsing and the finance minister was a social democrat, Germany passed a constitutional amendment that will prohibit the federal government and states from running any structural budget deficit from 2016 if the economy is not in deep recession.
I find it funny that Germany is so pro-Obama, because Germany represents the other side in this stimulus vs. austerity war. USA, UK and Japan want immediate growth, no matter if imbalances get worse. While Germany says that monetary policies should not replace structural reforms.
Merkel's CDU/CSU staunchly opposes the idea of giving a Fed-style dual mandate (price stability and jobs) to the European Central Bank. The jobs mandate would allow the European Central Bank to do virtually anything in order to "fix the economy". A pretext for massive interventions. This is one of the most solid conservative values in any western nation.