Live conferences are definitely better in my book. You show the same content you would at a pre-recorded event but with the benefit of audience reactions (both positive and negative) as well as the hilarious fuck ups. The unrehearsed stuff combined with atmosphere of the crowd can add comedy value that would otherwise be lost.
It's like comparing a pre-recorded piece of music to a live concert with all the added atmosphere a group of hundreds/thousands of people can bring. For the "journalists" in the actual event, it can completely alter how they perceive a particular game or tech leading to a more positive preview.








