Alternating between pixelSize and pointSize in state changes does not work as expected

import QtQuick 2.0

Item {
    id: main
    height: 640; width: 360

    Text {
        id: label
        text: "hello world"
        font.pointSize: 25
    }

    states: [
        State {
            name: "1"
            PropertyChanges { target: label; font.pixelSize: 10 }
        },
        State {
            name: "2"
            PropertyChanges { target: label; font.pointSize: 80 }
        }
    ]

    MouseArea {
        anchors.fill: parent
        onClicked: {
            if (main.state == "")
                main.state = "1"
            else if (main.state == "1")
                main.state = "2"
            else
                main.state = ""
        }
    }
}