Chinese-to-English translation, which is notoriously difficult, showed marked improvements, but still lagged compared to the algorithm's translations among Indo-European languages. For some other language pairs, the accuracy of the NMTS approached that of human translators, although the authors caution...
Yes, Google Translate leaves the others in the dust, but as a person who uses it every day to translate English into Chinese, I can tell you, oftentimes the results resemble a バラバラ殺人事件 — a murder where the body has been dismembered and the body parts hidden in different places...