For each categorical field, this shows a dot plot for the modal category of each cluster, with dot size corresponding to the percentage of records. For continuous fields, this shows a boxplot for the distribution of values within each cluster overlaid on a boxplot for the distribution of values overall. These plots generally confirm what you've seen in the Clusters view. The Cluster Comparison view can be especially helpful when there are many clusters, and you want to compare only a few of them.