The original response consists of roughly 21000-25000 bytes.
The button click results in a "attribute" response (rougly 480 bytes).
The check boxes result in "insert" and "update" responses. The values of the checkboxes are updated in the same response, requiring an additional "attribute" tag and an "update" of the PrimeFaces HTML code displaying the check box.
Delete responses take roughly 4000-6500 bytes.
Insert responses are currently disabled. Instead an update of the entire form is required. This takes roughly 9500-15000 bytes.