"Are All 'Christians' Christian?"
A better question whould be, "Are All JWs Christian?"
If the anointed are Christ's brothers who make up the "true Christian" congregation, what does that make the non-anointed members of the JWs? They're not spiritual sons of God...they're not Christ's brothers. If they're not considered either of those, and are not part of the "true Congregation" then just what the hell are they?
That's a QFR you'll never see in a WT publication.