As I said, the lecturer is far more likley to have some idea as to the nature of the eventual cut-off than anyone else, because even if no such university-driven rise occurs, they are likley to have some idea as to the demand given that they would have more than close ties to the university's administration. There's nothing to be gained by equating a lecturer providing information on such a day with a teacher or a careers advisor, because there is no meaningful similarity to be found.
Disregard what I have to say, though. I know that you will.
Edit: The lecturer may well be wrong, but I take issue with the suggestion that such a person is just thinking on the run. If the comment is made at such an information day, then it's safe to assume that there has been some thought put into the notion by the university's bureaucracy. That's all.