Seems too high to me; I wonder if that's supposed to be "33.0"? They report their results for Cu in tenths. Perhaps the decimal is missing?
It's moot because the actual Cu ppm count in the UOAs is VERY low.
The TBN got a nice little shot from the top-offs.
I see this load being able to go much further. Probably the Fe, Silicon or perhaps even Al might trigger an OCI, but it's way too early to tell for sure. All that is known for sure is that the wear rates are very low for a 1700 hour exposure, and many more hours are left in the load.