I see your point.
The harsh truth is that Torah Judaismm and Christianity are COMPLETELY DIFFERENT religions, not just some disagreement over the identity of the Messiah.
From a Jewish perpective (right or wrong), the stories of Fatima or Nostradamus AREN'T different from the Christian view of "The Bible", and all may serve the purpose of the Divine.
I don't think Christianity and Judiasm are majorly different although denominations of Christianity can be totally different, being a Christian means one thing only and that is you accept Jesus as the risen saviour.
Interpetation of the Tanakh the Old Testament is another thing I think it's a debate with all forms of Christians and Jews... One thing is how people can justify homosexual relationships when it is so spelled out in Leviticus..
All I can say is I beleive GOD is looking down upon the earth shaking his head and when he finally comes Everyone will know the truth, until then the debate goes on....