The date of the PC Mag article led me astray.
I have re-posted in NIS Forum.
It shows excellent results comparing NIS to paid for competitors in "real world testing"
New thread is here: https://community.norton.com/forums/kudos-symantec-latest-test-results-nis
But I assume that if anything, in real world testing NS should perform at least as well, if not better than NIS.
Sorry for my error. Posted originally out of exuberance about NS.