Real time axis performance - Any case studies available?

[Gudla, Natraj (GE Money, consultant)]

Hi All,
 
Is Axis2 proven to handle real time heavy load of concurrent request(s)
and process them with quick responses. I am interested to check any case
studies or hard learnings from any one who might have had this
situation. We are trying to build an on-line payment application, which
requires customer payments to be authored in quick turn around seconds.
The web applicaiton will hit a new web service layer to be developed
which internally interacts with one or more third party web services. 
 
Before we kick off using Axis2 we need to understand the real time
performance. Any inputs will highly be appreciated.
 
Cheers
Natraj.