Is the failure of Acura MDX transmissions an anomaly or systemic issue?

Personally, I have not seen too many MDXs have an issue. We have a transmission to put in one this week but that is the first one I have seen in several months. On the Honda side, I have replaced and seen several transmissions replaced. So I would have to push it an an anomaly. Our Acura dealership serves an area of approx 150 miles around.