> To contextualize when Wuhan had O(1000) cases, before full quarantine, the infection was growing at a rate of 50-100% per day. In contrast all of the aforementioned provinces are now currently keeping growth below the target of 10% per day.

This is how the figures have grown for confirmed cases, i.e. number of positive test results that came back. Not "actual real number of cases", which I'm sure the healthcare professionals and politicians in China are all aware of, as everyone else should be. It's already been clearly recognised that Wuhan/Hubei botched the early part of managing the epidemic, so the discrepancy you point out is pretty expected.