Except that Jesus wasn’t primarily speaking in a Roman setting, he was speaking in a Jewish setting.  Granted Rome was always in the periphery, but when Jesus made statements like "I and the father are one" and "before Abraham was, I AM", he wasn’t speaking about Roman emperors or making political speeches.  He was claiming to be somehow ontologically connected to the One True God of the Jews.  This is why Jewish religious leaders kept trying to kill him, and finally succeeded, in part by painting Jesus as a political rabble-rouser.If you say that the truth of God is being revealed in all creation, including all religions, I would agree with that statement.  But God revealed is not the same as God attained.  To know some of God’s truth is not the same as knowing the God of truth.  And this, it seems to me, is Christianity’s fundamental claim:  In Christ, we know God.  Not that we can’t know something of God in many other places and ways.  But we don’t attain God (or rather, God does not attain us) until the experience of Christ takes place.

I don’t know if this is where you are coming from, but I have always found it odd that people want to take Jesus and water him down to the point where he is just another human conduit of God’s truth who didn’t really say anything that was truly universe-shaking, and then decide to follow that Jesus.  Doesn’t seem nearly as impressive to me.