Custom Dimensions: nb_hits segmented by actionType

Custom Dimensions show a column Actions which is named nb_hits in the data. I suppose that these actions include page views and also other things like events, which I use here quite a lot. So I tried to get the page views only with segment=actionType==pageviews. This reduces the number of actions but not by the number of events that are tracked. Also segment=actionType==events gives me a totally different number than the number in the events report and also this does not fit to the page views.

Anything wrong with segments here?