Are most Austrians unwilling to claim "the government can make the economy worse"?

Walter Block, in the video posted below, says that, since you can't make interpersonal utility comparisons. So if any government policy makes one person better off, you can't say it's a worse outcome. https://www.youtube.com/watch?v=wHIm2NRvcAQ around 36:30

link: http://bit.ly/1hMI0GR