Tanisha didn't escape the wrath. She clearly broke the rule and due to exceptional circumstances was not evicted. However she was reprimanded for her violent acts and nominated for eviction. The difference here is Tanisha realizes she was wrong and wants to apologize. On the other hand Kushal is completely unrepentant and still believes what he did was right. There was no reason for so much grudge and hatred for Kushal to vent. He made a fool of himself for carrying all this for only one reason that Gauhar had issues with the other contestant.
Copy/paste my response from other thread here.
Seems like it is okay for a man on national television to throw putrid garbage, corrosive detergents, and all kinds of inhalants powder, ashes while the woman is trapped in a box and then spew all kinds of degrading expletives on her. Isn't this violence? (I am no Salman fan) But if anyone took a stand on this he/she is being unfair and biased? How? She was wrong when she pushed and was rightfully punished but if nobody said against what Kushal did it will be a wrong message conveyed. Especially in a country where it seems so frequent to bully/abuse/other heinous gang crimes on a girl.