I am not quite sure what you are asking?

It is very common for buyers to open 'not as described' cases.

I would assume that anybody who is willing to spend such a huge amount on an item with no intrinsic value would be something of an expert, and would expect absolute perfection.

Not finding it, they asked to return the item.  Even a professional grading company can get things wrong.

Ebay has a brief and specific list of reasons for opening a return.

Unless Pokemon cards have their own set of reasons, I would guess the buyer choose the fairly generic 'not as described in the listing' and added 'image misaligned' to any notes.