we usually judge people and statements according facts.
God has created everything..nature,science,religion,humans...so there is always a harmony in them...if we compare teachings of religion...and see harmony with other elements of the universe,human nature and spirituality..then that would be the right one.
Every religion in the world is right to some extent as it is sent by God.
we cannot declare any religion false but the thing most people do not understand is that some religions are tempered by people for material purposes.so the best why to judge something is above stated.
you know in my religion,our prophet(SAW)said that if you want to know what is right and wrong...your heart or conscience is the best meter for it.
you would do bad things and wish no one see you.
next time you lie...see how your heart pumped and how you feel.
in contrary to this whenever you help someone or speak truth,you feel good from inside.
these things are also scientifically proven after 14000 years of Prophet's statement.