While I generally agree, there are certainly comparisons of "abundant wealth" where the nations did not honor Judaism or Christianity. Japan and China are just two of many examples.
There is more (much more) to the story of God's blessings on lands. The same is true for "abundant wealth." I'm afraid abundant wealth is not unique to only believers.
It's just not that simple.
A lot depends on Christian virtues, which of course need not be solely possessed by Christians.
Christ is often described as a shepherd and as a savior, both for good cause.