I wouldn't buy into any idea that the questions were rigged in their favour, but they were given a very odd degree of leniency on a lot of questions. Part of that stems from the way they answered questions - most teams confer amongst themselves and then present their answer, whereas the Boardgamers were allowed to just waffle on about anything they knew about anything to do with any of the clues until they hit on something that Victoria would accept.
In fact, she was almost apologetic on one question last night, saying that she couldn't make their answer fit.