Caldari NPCs do not seem to drag the % down that much anymore during initial phase but based on observations, they still focus ECM and seem to lack webs so they are not good in killing Triglavians.
Once minor conduits appear, they seem to falter remarkably. In Reitsato, the % was kept around 47% during first 24h. After 30-33h it was still around 45% but after that there seemed to be a dramatic drop in efficiency.
Friendly pilot reported that he was alone in system when it had gone to 13% with no hostile presence and it steadily ticket down to 0 despite his attempts to delay it.