This is not to say that angels don't pitch to entrepreneurs; they do, but they do it after the entrepreneurs pitch to them (and a pitch can be a purely reputational discussion/email (e.g. "if you want money, ask for advice") rather than a session in the elevator, so let's not be constrained by silly definitions).
To see that process run in reverse is insane and signals a serious problem in the market.
Note: I'm an entrepreneur and am in this game with some success, so I'm not speaking out of jealousy...
This event is a marketing tool for angels to garner the attention of as many startups as they can in areas they are interested in investing. The title of the event makes it seem as though the tables have been turned on the entrepreneur and investor, but in the end everyone can guess who is going to be approaching who.