Alright, fine. Thanks for educating me. I was wondering about this quite a lot: some places, like USGS said 6.9, while some news articles said 6.8.
Also, another thing: why does an earthquake often have an initial magnitude that then changes over time? Like I think the initial ping for this was a 7.2, like take a look at this prelim from USGS:
6.8 and 6.9 are both right, just different unit.