A not guilty verdict would worry me because it would imply that you can strangle and smother someone to death and avoid being found guilty of murder if you say you didn't mean any harm and make ludicrous statements such as that you didn't know that strangling and smothering led to death. It must worry the judge for that reason too.
After reading about the pilot that had already dug a grave for his wife before he killed her, and getting a Manslaughter verdict, sadly nothing will surprise me.
It some respects it doesn't make that much difference what the jury decide. It comes down to what the judge thinks and the sentence he deals out