BB's tone of voice while interacting with Asim and Siddarth was really different. BB's tone while talking or instructing Asim was so harsh and while interacting with Siddarth was so mild and soft.
Siddarth in the confession room was screaming and was so rude and has the guts to ask BB that he wants to hit Asim. Inspite of this BB's tone of voice was soft and that of understanding. It clearly showed his biasedness all along. Not Fair BB.