To me, there is such a profound sense of connection with Buddhism when it comes to its understanding, practices and maps. And there is an equally profound sense of connection with Christianity, in its heart-centeredness.
Buddhism provides the clarity and outlines, the mind aspect. And Christianity provides the enlivening of the heart.
Of course, there is an emphasis on compassion in Buddhism as well, but it sometimes seem more cerebral. In Christianity, I find a fullness and a wild raging heart-centered fire of passion and compassion.
And again, for me, the two are such as perfect match, profoundly complementing each other. Buddhism has the clarity of the first person explorations as Buddha Mind, God and Spirit. Christianity has the raging fire of the second person relationship, merging into first person.