Dear Rajeev, I did not mean righteousness as regards to sin but as regards to the assertion of one's faith. For instance I never quite understood the split between Judaism and Christianity nor their mutual antagonism. The bible scholars I mentioned have helped me see through it.  So have the words reported to be of Jesus in the Gospel of Thomas ( logion 43, if you care to look it up).
A beauty of the  Indian tradition is to acknowledge that people have different inward complexions and that what is right for one is inadequate for the other. This is why there are different types of Yoga to suit different types of people and help them progress on their way, none being exclusive of another.