If Hindu bhakti already has grace and a personal God, then Christianity is just one more devotional path, and the exclusive claims about Jesus look arrogant against it.

The overlap is genuine and worth rejoicing in, but the differences are not small. The God of bhakti is approached through many forms and often as one manifestation of a deeper impersonal absolute, the problem addressed is ignorance and the cycle of rebirth rather than guilt before a holy Creator, and no bhakti tradition claims that God became one particular man, died for sin, and rose. The point of contact is the shape of grace. The question that remains is historical and personal: which account of the God of grace is true, and did he actually come.