Apart from the stage fright that many of us feel, presenting to a large audience is usually easier than presenting or facilitating for a small group.
In many ways, presenting to a small audience is more challenging than presenting to a large group (stage fright aside). In my experience, you can expect more detailed questions with a small audience.
The other day I walked through a hotel lobby and saw the common scenario of two business people looking at a laptop displaying a bar chart. Most business presentations—whether for an audience of one or one thousand—contain charts and tables.