A very interesting analysis @modernpaster.
I would think that up to a certain point, SP is crucial. For example, one just signing up who doesnt power up is going to have a tough time giving to others. That said, I agree sensational posts would attract attention although that can be tough.
In the end, I believe it comes down to what are you contributing. My posts do not get a lot of monetary returns which is okay at this point. My following isnt that active I guess or they simply dont like what I write. Either way, it is my role to keep contributing. That is what gets results.
This is a strong attitude. To keep up contributing even when the results are not like expected.
Keep on doing that I think you will see a difference by time.