Hmmm, yes, that was the first thing that occurred to me (not).
Thank you for the post...that was a very clear presentation. One interesting thing about John Steven's presentations in this area is that he often plays up these commonalities in a very general way. I think he would get less criticism for this if he laid out some of the back ground as you have just done. I believe he considers his approach as making these topics 'accessible' to occidentals.