This pollster has an A+ rating at fivethirtyeight.com.
«When considering who benefited more from these talks, 39% of the American public say both countries gained equally and a similar 38% say North Korea gained more. Only 12% say the United States left the meeting with a net gain. When asked the opposite question of who gave up more concessions at these talks, 33% say both countries did equally, 29% say the United States conceded more, and 19% say North Korea conceded more.»