No I'm a realist and realize that all candidates (CERTAINLY China and Russia, but even EU if we're honest) are far, far worse than "the American empire".
It's also two different things, you might be right that China, Russia or the EU would be worse as a hegemon, but that doesn't imply that it wouldn't happen.
Being a realist would imply that you would understand that a fundamentally worse hegemon could still replace an existing hegemon.
