Performance comparison of SOAP implemetations

Hi,

Is there any reference/white paper/document which does the performance comparison between SOAP implementations, specifically between Apache's Axis implementations and Sun's Soap implementation ?

Also is there any document having performance comparison between Sun's Web Services Development Pack ( WSDP ) and IBM's Web services Tool Kit ( WSTK )

Thanks

[393 byte] By [JINI_] at [2007-9-27 13:52:50]