Cities way more stable in 1.3?

I'm about 12 years into my save and while a ton of cities have changed hands, I've seen exactly one rebellion when Syronea rebelled against the Khuzaits occupying them.

Previously the AI was so bad at managing fiefs that you'd occasionally see Lycaron rebelling against the Southern Empire because it was Tuesday and they were mad, much less anywhere wrong-culture. That was basically a guarantee. But now I see places with wrong culture, wrong governor, etc, and they still have a resting loyalty of 40-50, plus the AI seems to stack their garrisons a lot more.

Is this just my seed or has anyone else noticed this?