The utility of any religion is proved only when it establishes uniformity with other religions. Any religion, which condemns, domns and rebukes other religions; looks at their customs and traditions or rituals with hate and disregard, cannot be true and universal.
There is no laboratory for religious conventions and beliefs. In fact, the supremacy of a religion is tested on the basis of purity of conduct, compassion, mercy and emphasis on non-violence. It preaches to remain aloof from vices and follow the path of good conduct. It should be perfect on ethical parameter and has a wish to render welfare to the mankind.