Glad the video royalty goosed the numbers a bit, but I agree with the overall picture - SS is not doing as well as it did (for me).
The last three months of the year have always been the peak earners for me, and taking a look at Oct - Dec at SS this year, compared to 2013 (the peak Q4 earnings for me at SS), earnings were down 65% and downloads down 72% from 2013
Q4 this year, AS/FT beat SS - a first for me.
Comparing SS Q4 this year to 2017, earnings were down 48% and downloads down 27%
I have to go back to 2011 (when I was still re-uploading my portfolio after switching back to independence after 3 years as an IS exclusive) to see lower Q4 earnings (although downloads this year are still down 22% on 2011 Q4!)
Bottom line is that SS is still a decent earner, but falling behind itself and AS. It's reminiscent of the switchover from IS being the top earner to SS as #1 many years back. The king is dead; long live the king (as it were)