The first thing to understand is that Anglicans including US Episcopalians have, since the beginning of the Oxford Movement in England, held a variety of views about any number of topics, but principally regarding the sacraments. There are those who believe that there are only two (Eucharist and Baptism) and those, like me, who hold that there are the full seven. Also, I believe in the Real Presence and I think my belief is fully in line with Roman Catholic positions. There is a wide range of beliefs in this area.
In modern times, the wide variety of belief was extended to beliefs associated with the ordination of women, the service in the church of those who engage in homosexual relationships, and “gay marriage”.
I personally do not approve of gay marriage or of ordination of homosexuals who are not celibate. I am ambivalent about women’s ordination, but I recognize that for the greater goal of Christian unity, that particular application of women’s equality needs to be sacrificed.
So, unlike the Catholic Church which has a well defined set of beliefs, the Episcopal Church has an ill defined set of beliefs. I think that in each case, one would look at the people in the pews and wonder what, exactly, they believe.
Oh, we do affirm every line in the Nicene Creed. Do all Anglicans believe what they pronounce? Do all Catholics?