While many religions may claim to be true, and may be true in a number of ways, there will always be problems when one begins defining truth in rational material terms and then applies this to religion.
A religion cannot be true or false in the rational material sense. That would be like asking if your relationship with your mother is true or false. A relationship is not a measurable phenomenon. It is definable. It possesses qualities that can be described, but it cannot be weighed or measured. The language of the question is wrong, and therefore the answer to the question becomes distorted. I can give examples of subjective personal experiences that I've had with God (or my mother). I cannot produce a relationship for the purposes of scientific validation.
I'm not interested in discussing the objective truth or falseness of any religion. Every religion is true in the sense that it exists, even if it only has a single follower and even if that follower is a crazy person. At the same time the substance and source of every religion is false. A religion is formed by interpreting objective and subjective experiences into a meaningful cohesive story. An interpretation can be based on facts, but it can never have the qualities of a fact, because like a relationship, an interpretation is always subjective and cannot be measured.
God is unquestionably real as a concept (otherwise we couldn't even have this conversation). God cannot however be measured as an object (and no statement of logic, faith, or subjective experience will change this).
My god therefore is a verifiable historical fact, a figure believed in and represented by people of a particular culture during a particular time period. He had significance to those people, and he has significance to me. This is not however the story of why I believe, or why I have chosen to cultivate a relationship with this particular god over all others. The "Truth" of my god and my religion can only be expressed in a conversation about meaning and significance, never in a conversation about proof or validation.