What I think the quote says is that God is NOT son of man...what u are saying A C is that Jesus is NOT son of God, they are both two different things all together...so A C I think u need to think before you write something or conclude something...
I am not a believer of Jesus or Chrishtianity...my point is to just point out the err in A C conclusions which dont seem to make sense(as such me being a HINDU, for me Jesus being the ONLY way to heaven will NEVER make sense to me!)but may be A C can throw some light as to what he is trying to say and conclude on what basis...?