Error scanning 101:
There are at least 5 variables that affect the outcome of the error scan.
1) the burning drive
2) the media burned
3) the burn speed
4) the reading drive
5) the reading speed
1) Every drive has a "preference" for the media it likes to burn, which can include different batches of the same media.
2) Every media varies from batch to batch, disc to disc, and even from the start of the disc to the finish.
3) Every burner has a "preference" for burning speed, regardless of what media is in the drive.
4) Every drive has a preferance for what kind of media it likes to read.
5) Every drive has a preference for what speed it likes to read a given media at.
You cannot draw any general conclusions about any particular drive or media type based on a few scans. If you wish to use a particular media, you should try different firmware revisions and burn speeds to "fine tune" your performance if you want the lowest C1 rates.
Drive firmware revisions, wear and tear, variations from one drive to another, overclocking a drive, and a dozen other factors will affect how it behaves with a given media. Even multiple scans of the exact same CDR can produce varrying results in the same drive.
There is no real evidence to support the conclusion that higher C1 rates (within reason) will adversly impact the performance of a CDR. We do know that lesser quality CDR's with higher C1 rates may tend to degrade over time, but given a good quality CDR that is burned reasonably well initially, there is rarely any degradation seen. TY has earned the reputation for stability over time, even with higher error rates.
The C1 error scans should be viewed as more of a benchmark of the performance of a given disc in a given drive, not as a test of the relative quality of either the drive or the CDR. It's just another piece of information in the bigger picture.