Price Performance Ratio
For every $2.29 spent on a .NET transaction, the Websphere 6.0 equivalent clocked in at $5.87 per transaction - over two and a half times the cost.
Industry benchmark studies indicate that .NET/Windows platform can scale from 16,000 transactions per minute to over 500,000 transactions per minute.
The IBM WebSphere J2EE/Unix technology, one of the best representatives of the J2EE genre, does no better than a 17,000 to 110,000 range of transactions per minute, at a much higher cost per transaction.