Speaking Fast and the Illusion of Higher Intelligence?

I used to believe articulating words is best but I think we should know when to speak fast and when to articulate.

Often, people who explains things quickly and well usually appear more intelligent and smarter and gain higher credit from others and enforce more control over others.

The psychological trick is that when one speaks fast, he would have more control over others because he steals the time needed for others to have their own thoughts. In addition, the quicker you speak, the quicker your brain works and you yourself feel more intelligent and are able to analyse things quickly and better.

This is not against any listening skills.

So perhaps best is: when you're presenting something solo, articulate. When you're communicating with others speak faster.