However, I am reporting, as are others, that the AI is not scaling to Combat ranking. I am still, after 18months, Mostly Harmless (I am the Rabbit King) & I am encountering runs of Deadly & Elite Anacondas with no cargo in my hold, not on a mission, in medium sec spaces, with teleporting AI ships which appear right in front of you and an Anaconda outrunning my Cobra MkIII (fastest ship in the game, right?)
In which case you might be suffering from a bug, which you should report. In the last 10 days of playing with 2.1, I have been Harmless (in a non-modified Sidewinder), & have yet to be attacked by anything more than a competent outside of a Distress Call (which I am fast learning to avoid until I get a better ship). Even whilst scanning I am lucky if I ever find an NPC with anything higher than a Dangerous rating.