Both sides are correct.
According to the survey, 22 percent of Americans said that Obamacare was his greatest achievement -- more than anything else -- while 36 percent say it's his greatest failure.
But it's quite possible to hold both views simultaneously.
One can recognize that for liberals and their ideological ancestors who have been trying for a century to pass some sort of national health care program, the mere enactment of Obamacare was a tremendous legislative victory for liberalism.
At the same time, in the early phase of its implementation — from missed deadlines, delays, broken promises, and technological problems — its proving to be a massive failure.