That would depend on their relative starting influence and the population.
If A was on 40 and B on 30
in a 10K system A would gain 0.1 and B 5.5
In a 10 million A would be too low to measure and B 3.3 gain
and in that same 10 million system, if A was on 2% to start it would gain 4.3%
I did not mean tick influence change.
I understand and really appraise your wine bottle analogy, -thanks for that post also-.
You discovered that the stacking of mission inf plus points gets nerfed the more you get in a exponential ratio.
My question is that if that stacking nerf applies only to the faction you are earning the plus points to or all the factions of the system.