ED Passions = SR Totems / Mentor Spirits?? That's one way to look at it, sure.
It's not accurate, but it is interesting.
Are you are saying that there is not a one-to-one correlation between Earthdawn Passions and particular sixth world totems? Or are you saying they don't function in similar fashions/occupy similar roles?
The Passions played a different role in ED than mentor spirits play in SR. I'm sure that some SR mentor spirits might be the Passions, but there are MANY mentor spirits that simply don't correlate with any known Passion.
Ofcourse they played a different role in ED, as i said earlier the SR mentors is what the passions look like after thousands of years of evolution up through the various 5th World religions and traditions. Besides we only know of the role they play at one point throughout the Whole of the 4th World.
And in regards to some mentors not corresponding to any known ED passions, well in the ED material they say themselves that other Places have strange passions unknown in Barsaive.....maybe because Theres more than the ones known in Barsaive or maybe because they are known under different names elsewhere, so it's actually left open whether there are more or there are just the ones known from Barsaive.
There's more than enough "evidence" from SR material to show that the passions are still around and more than enough similarities between passions and several SR mentors to suggest that they are indeed one and the same when you factor all the 5th World Development into it. As always though, this is of course a matter of interpretation as, afaik, there's never been any official comment on this one way or the other.