I confess I don't entirely understand your question, but the habit of trying to shoehorn very different religious ideas into ill-fitting pre-existing concepts is, to my mind, the hallmark of Newage thinking. Those Newagers who call themselves "Christian" usually follow some form of "esoteric Christianity", a term which implies that Christ's
true teachings were revealed and passed down only to a select worthy few, and hidden from the masses, and that complete salvation comes through knowledge of these secret teachings. Technically, this is the heresy of Gnosticism (salvation through special knowledge). Newagers also almost unanimously share the Gnostic teaching that the physical, material world is something to escape, transcend, or permanently evolve beyond. I'm not altogether sure of the history of the Newage esoteric Christianity, I'm pretty sure Rudolph Steiner had a hand in it, and Elizabeth Claire Prophet's group is a major player these days.
The Newage idea of Christ is usually some kind of "cosmic Christ", which has next to nothing to do with Jesus of Nazareth, except incidentally. They usually see Jesus as similar to how the Muslims see him (one in a line of prophets), or how the Hindus see him (a divine incarnation, but again one of many rather than unique), or how Buddhists see him (an enlightened being whose teachings are valuable, but again one in a very long chorus line of enlightened beings). Other Newagers have other, more, um, original ideas about it, but they almost all think that Christ is one of many teachers/prophets/masters, and that all ideas of God from all over the world can in interpreted as local manifestations of one single idea of Divine Being (theirs, of course). All religions are really "one" (theirs), the differences from one to another being only a matter of details - names, symbols, actions, etc.
It's not surprising therefore when they try to say that the Creator that the Native Americans believe in, is "really" that same single Divine Being (the one that they believe in), and that when they dress up in their buckskins, beads, and feathers, smudge with sage, and build medicine wheels, use crystals to align the chakras, do sweat lodges and vision quests, and carry around their pipes, they are really just worshiping that single Divine Being, and who cares about the details, as long as it's from the heart (or, worse, as long as it "feels right")?
earthw7 gave a very good outline of a traditional point of view, and members of other tribes may state their beliefs differently. Most of the Indians I've known are at least nominally Christians (Baptists, mostly, and a few Holiness and other Evangelicals, but not one "estoteric Christian" among them). How they harmonize Christianity with traditional practices, I don't know, and it's not my business to know. There is no one Native American religion, just as there is no one Christianity. All religions do have important concepts in common, because there is only one kind of human being, and everyone pretty much agrees that you should believe in God and the teachings of his representatives (whoever they are), be honest, don't steal, support your family and community even if it's personally inconvenient, respect your elders, control your passions, and so on. But the details are different, and they're important, and we just can't throw them out for the sake of some contemporary idea of super-religion.
I tend to be a bit conservative in these matters, in that we should follow the religion we are born into as well as we can, with simple faith and humility, trust in our elders, and a good sense of living productively in the world. Some of us, myself included, have found ourselves led elsewhere, and that is good as long as it's done with a great deal of listening and thinking and asking questions. But it's never a good idea to make up our own religion out of bits of this and scraps of that, or to follow someone who does, just because it "feels right", or because we're dissastisfied with the "same old thing" we grew up with. Any "new" religion has to be rooted in centuries of teachings and living traditions (Jesus was a well-educated Jew; the Protestant Reformers stood on the shoulders of giants, theologically; even the Buddha started out as a fairly traditional Hindu ascetic).
It may be true that all paths lead eventually to the same mountaintop, but not all paths are equally safe. Blazing your own trail or following the road less traveled may get you to the top of the mountain, or you may fall off a cliff before you get there.
um, well, there I go again, I hope this helped to answer your question somewhat. If not, well, then never mind.
