Golden, nobody will be fooled by the skewed logic of Dr. Zakir Naik. Mahabharata and Ramayana are epics (stories). You are trying to justify historical truth with what has been written in some stories.
Moreover Pandavas were not fighting with Kauravas for worshipping a different god. It is only muslims (and Christians in the mediveal era) who waged wars for propagation of their religion.