I find those stats somewhat surprising (FWIW, I'm an Evangelical Christian). I wonder if the ~1500 sample size yields a more coarse resolution than the stated +/-2.9% margin of error. "Protestant" encompasses a very wide range of theological perspectives: Unitarians and United Church of Christ people might be more likely to believe in UFOs than in a God who is a person distinct from the universe; at the other end of the spectrum are people whose faithfulness of belief in what the Bible teaches is pretty much only limited by their personal knowledge and human understanding.
While the Catholic Church is one organization, it also has a lot of variation from parish to parish (some are very New-Agey, some quite orthodox), and of course there are "Cafeteria Catholics" and Christmas-and-Easter Catholics (I'm not being critical, just pointing out reality I've "observed" second-hand).
Going back to Protestants, even sampling Protestants by Baptist, Methodist, Presbyterian, Pentecostal, Episcopalian, Lutheran, etc. can be misleading. Among Baptists, the American Baptist Church is liberal theologically, while the Southern Baptists are theologically conservative. Among Lutherans, the Evangelical Lutheran Church in America is quite liberal (Abortionist George Tiller was an active member of an ELCA congregation), while the Lutheran Church Missouri Synod (in which I grew up) and Wisconsin Evangelical Lutheran Synod are quite conservative theologically. There is a similar circumstance among Presbyterians, and the United Methodists and Episcopalians are going through liberal-conservative conflicts.
My point isn't a litany of the conflicts among Protestants or the corresponding stuff in the Catholic Church, but to point out potential sources of error in the poll that would be difficult for the pollsters to compensate for, and possibly even to recognize. My opinion, which isn't worth much, is that the poll puts acceptance of those various teachings 10%-15% too high. If that ~75%-~80% is real there are a lot of Americans whose way of life does not at all reflect their beliefs.