Yes, there is.
If your assertion was accurate and all of the faiths you mention share the exact same view of God and what He expects from us, why would there then be distinctly different religions?
And each of us has (as the Methodist ministers are so fond of repeating, ad nauseum) different gifts.
As long as God is at the top, who should be terribly concerned at how we organize our couches at His feet?
"Disputations among churches" don't really bother me ~ application of the Heisenberg Principle to the macro-universe should lead us to expect it.