The presentation behind bill gates is way too distracting, but the question is where the audience has its focus on.
If it is Bill Gates speaking, and it is your first time attending the presentation, you might even not really read any of the slides, because your focus is on this amazing person. If it is your 2nd time, you might already giving away more focus to the fancy slides. Which means you won't focus on the body language, voice tone aka the story he is telling.
You are trying to figure out the story by looking at the slides, while he is talking. You are not consuming his story, but are probaly without knowing it creating your own story, making relations on the slides that might be incorrect, etc.
The presentation of gates has enough text if only digital lifestyle and digital workstation are on the slide. He can just tell you in a story way 'digital life' style is memory, education, etc.
There is also a good book about this, which might come in handly if his assistent read it. Beyond Bullet Points from MSPress gives you the steps to a more movie like presenation, where the user experiences a story.