Just for the lulz.
Actually I encounter discs that were burned badly by standalone DVD recorders quite often. One reason might be the low-speed burning, but also lacking write strategies and firmware updates may be contributing.
This here is a CMC MAG M01, TDK 16x Inkjet Printable DVD+R from a jewel case. It was burned on a Sony standalone about a year ago and I don’t know the exact model name.
I didn’t expect it to suck that much though.