Do the comments still show after you empty your own browser's cache too? That seems less likely to be the culprit, but worth a check to be certain.
Elsewhere in this post there's also a helpful user who notes that the mass-editing programs can only handle a thousand comments. Is it possible this is why some of your comments are still there?
Right? OP thinks they're slick, taking a random picture and trolling us by claiming there's a cat in the photo. We can clearly see there's no cat. Nice try, OP. ๐