Hmmm. That comparison needs to be updated a little. Initially page caching was not available for OpenLiteSpeed, but it has been for quite some time. Thanks for pointing that out.
The stability point, though, probably does require some fleshing out: There are some new features that we debut in OpenLiteSpeed, but not in Enterprise. (SPDY, for example, or the new WebAdmin.) With Enterprise, we try to put in most advanced features, but we will always favor more stability over more experimental features. With OpenLiteSpeed, though, we feel more comfortable trying newer features. It's a difference in emphasis: Enterprise will tend more towards stability. OpenLiteSpeed will tend more towards newer features.
Does that make sense?
m