When the JW position on blood is the subject in question, I think the Jews often come off worse than they really should.
It cannot be emphasized enough that the JW blood doctrine is far, far beyond anything that the Pharisees ever actually taught. Judaism holds preserving life as the very highest of all mitzvoth. With the exceptions of murder, idolatry and gross sexual misconduct, any requirement or restriction of the Law could be set aside in order to preserve life. In other words, the Pharisees themselves would have had no problem with blood transfusion.
Tom