My point is that they should not even be able to be read.
PI/PIF error scans are not an absolute measurement of how any disc will read in other drives, or even in the same drive outside the scanning program. PI/PIF errors are not data errors.
Like I said, there are much worse discs around than this one, that are still readable. As to what your DVD player likes to read, that's an entirely different issue. An acceptable error level on one one media type may well be unreadable on another media type for a DVD player.