No, I didn't. I was comparing full virtualization to Jails. However, I realize now that there may not even have been a full virtualization solution available back then anyway, at least not for consumer hardware. I'll have to dig a bit on Wikipedia.

I've never used Solaris Containers / Zones, but my understanding is that the implementation was similar to FreeBSD Jails, so I have no reason to believe the performance was different.