as for as bachitar natak is concerned. it is a battle between mehkasur or bhakha sur and inder.it is written in markande puran. after 1984 attack on Harmand sahib the hindus took it out and started a serial on tv. to try to claim that guru Gobind singh was hindu. the serial might still be going on. so go to internet and watch the serial. some smart person to sell books added it in dasam granth and claimed that it is written by guru Gobind singh jee.
The difference will always be there. Guru Gobind Singh passed Guru gaddi to Guru Granth Sahib ji. Any other text is a Volume collected after His death. A diamond can only shine the light of the sun. In darkness it is lost in itself.