This is a $40 offer to anyone who can demonstrate a scenario of the failure of a top rope anchor using two non-locking opposed biners at the power point.
....ail you $40.
Open your wallet because your bet is already lost. Here is how I do it: First I set up the anchor with a double strand of 2" webbing and any selection of two O&O biners. Next I thread the rope through the master point biners. I am going to pretend to be a super paranoid Majid and use 5/8" static rope to TR on. Next I anchor one end of the static line to the ground because being Majid I cant find any partners to give me a catch, so I am going to TR solo. Last but not least, I connect the climber end of the rope to my friend's F-450, drop the b**ch in 4x4 low and smoke all four tires on the cement. Biner failure. I win $40.
Other than that, its not going to happen, I think you will end up keeping your $40.