6.5 is a classic drop grade for a VF range book with one moderate stupid thing done to it.
Like 5.0 is a classic drop grade for VFish books with a moderate sub-crease.
Agreeing with you here except for the 'one stupid moderate thing'. IMO, it's one, severe stupid thing. I realize grading is a judgement call, and the severity of a flaw is a judgement call but I don't think the graders thought this through enough. That is a nasty flaw. The comic should not be called a strong Fine.
Well remember the "grade" reflects the structural condition of the comic more than the esthetic condition (comics poorly centered get no "points off" etc...) so a comic with a popped staple will get killed but a comic with a silly kids scribbles will only get a wrist slap.