It's a long shot, but I figured I'd ask here...

Our company is preparing to move to a new application server for Java like Websphere, JBoss, etc... We need hard numbers, statistics, etc... about each of the application servers to help us decide which one to choose. Does anyone have any information that could help? I know actual numbers can vary depending upon system setup. Basically anything we can use as hard facts to make our decision is appreciated.