Statements missing properties

The statements section lists the following properties:

encoded_plan, featureControls, indexApiVersion, name, statement, uses

However, if you do a select * from system:prepareds the following properties are available:

encoded_plan, featureControls, indexApiVersion, name, node, statement, avgElapsedTime, avgServiceTime, maxElapsedTime, maxServiceTime, minElapsedTime, minServiceTime