When they get adult stem cells to do everything embryonic stem cells can do, the adult stem cells will also be capable of becoming embryos. I don't see how this changes anything, for people who insist that embryos be treated as full fledged people. What difference does it make how something got to be an embryo?
Now you're the one trying to take all the fun out of it.
The difference between "totipotent" and "pluripotent." A totipotent cell can become any kind of cell. A pluripotent cell is limited to becoming a certain range of cells. Even a totipotent cell is not necessarily identical to a one-celled embryo - it will not put into play the self-directions to develop into a complex organism - unless it is manipulated to so. That's why, in order to clone (so far) you have to take a cell nucleus and insert it into an denucleated egg, and then stimulate the egg.