If Christianity only means one more bit of good advice, then Christianity is of no importance.
There has been no lack of good advice for the last four thousand years. A bit more makes no difference. So I think, Christianity is more than just good advices, good facts, good morals.
It's above and beyond that.
For no one could get closer to God's dimension by only being a good human being, unless he/she/(it?) knows and believe the existence of God.
