Dimpy said that just like Upen nominated Puneet and Pritam who made him captain, in the same way Gautam didn't saved her who helped him in becoming captain. But she missed the point that both cases are entirely different.
In Upen's case BB asked for nominations and Upen nominated both of them giving the reason that they unfairly lost the task to make him win the captaincy task albeit previously he did not refused to accept the captaincy if he realize it was given to him unfairly. He was criticized NOT for nominating them but for the reason he gave for nominating them i.e. if winning captaincy task unfairly is really an immoral deed for you then why the hell you accepted it in the first place?
However in Gautam's case he was asked to save two people and he saved Puneet and Ali. His choices were purely on the basis of who he thought were best in doing house chore duties in his captaincy and not that who is his friend or foe. If he chose Dimpy instead of Ali then he could be accused of partiality just the way Upen nominated no one from his own group but by saving Ali he proved that he is not biased like Upen and his reasons for nominating or saving anyone is totally based on logic and not partiality.