Telling Phrase 22: "All Roads Lead to Heaven"

This phrase is an underlying idea that many relativists believe is true. Are all major religions going to end up in some sort of eternal reward for having compassion, being good, and living in a way that doesn't harm or hinder others or their freedoms? This phrase implies that some sort of reward is in store for everybody. I believe that this telling phrase is far from the truth, as most of you would have already gathered from what you know about my beliefs.