JSON-formatted collection release list shows page total and not overall collection total

With the XML-based webservice I can get a list of releases in a collection. It contains the following element:

<release-list count="78">

If I switch to the JSON format for the same request, the only thing close to that element is the "release-count" key, except it shows:

"release-count":25

which is the count of the items on the page and not the count in the collection.