The logic as I see it is that if Masonry would expect a Muslim to drop such essential parts of the Koran, they would also demand the same of a Christian. I don't say that they are totally incompatible, as both churchs and Masons do build hospitals. It is just that mostly compatible can be a mask for being totally incompatible based on one very important point of incompatibility.
Slowhand,
This argument makes a lot of sense if the understanding of Christian theology is that the essence of Christ’s message is social ministry without the primary emphasis being on His death and resurrection and gift of salvation. For me, the essential truth of Christ’s message is the salvation, and social ministry (good works) is secondary, flowing from the salvation. This is true because accepting Christ is a life-changing experience, we are truly transformed from “me centered” to “other centered” followers determined to live a life of humility, service, and sacrifice.
I really don’t think that two distinct institutions, both of which encourage moral behavior and “ good works”, are incompatible when they don’t make similar metaphysical claims.