performance decrease from Qt5.2.0 to Qt5.3.0

I get qml benchmarks from:
https://github.com/qtproject/playground-scenegraph/tree/master/benchmarks

I test benchmarks/flyingicons by Qt5.0.2/Qt5.2.0/Qt5.3.0 on my platform. I add a timer
in the qml source file to count the fps. I find the result of Qt5.3.0 decrease compared with Qt5.2.0 and equal with Qt5.0.2.
I get the fps like this:
5.0.2: 3762 5631
5.2.0: 6755 8452
5.3.0: 3754 5613
I append my test file by attachment.

By the way, Does Qt provide some more benchmarks for users to test performance?
Thank you.