Here is some additional evidence for the theory.
This was posted a few years back on his deleted instagram account:
CGC graded copy:
First you can tell they are not the same copies just by looking at the top border.
There is also an alignment of printer artifacts - which supports them being either printed on the same printer or one being a copy of the other.
In addition to what seems like a loss of saturation (but could be due to different camera/imaging), there are also additional lossy artifacts on the CGC copy.
You can see the corners appear square on the instagram post as part of a black outline printed.
The CGC card has the corners cut “rounded” with no apparent black outline
