Convincing Sanchalak to favor you or throwing juice of other people, how are these two things different? When you are pitted against your friends, you either play to win or you simply don't. How is it backstabbing? đ€Ș
Only if Karan had convinced Shamita to favor his team, he would have labelled as mastermind, planner, genius, yada yada yada.
People are calling it backstabbing just because it is Vishal and he outwitted the so called mastermind.