Was wondering the grade myself. Classic cover, you gotta hand it to the artist as not actually showing a decapitated body even though that's what you're looking at. That excuse (among others) came in handy during the senate hearings.
A very good point - E.C.s imitators rarely understood the effect of implied or implicit horror (not that E.C. were that subtle themselves) and occasionally pushed the envelope too far, becoming too visceral, especially considering that we're talking about the early '50s, here.
Here's the cover to FAC 20.........
Very gruesome and sensational, and perfect grist for the Wertham mill.
Sadly that isn't my book......... Not an item to show the missus, or any non-comics fan, for that matter.