There was, perhaps, some CGC wiggle room on giving these comics high grades and universal cases if Infinite Black (apparently a real comic book publisher) was listed as the publisher. Then they could say IB published this comic with an acetate cover, that is the cover to grade, and everything else is "pages". However, CGC could not do that as the actual comic is UF 4.
With Marvel listed as the publisher on the CGC case, but having a large, noticeable item attached post-production by another company, there are 2 options in grading: 1) A universal label but graded as if the piece is not there (but the staple holes still are) or 2). A Green label.