BTRFS/ZoL doesn't beat Illumos ZFS. FreeBSD ZFS is pretty standalone in the OS; It can only since recently deal with a hot spare drive and thats it. IO scheduling on FreeBSD is spartan; It will always favor large IO and starve small read / writes.
LXC doesn't beat FreeBSD jails or Solaris zones since LXC is not considered a security boundary.
Openvswitch can perhaps measure itself with illumos crossbow.
Systemd doesn't beat SMF on Illumos. I think SMF really nailed it (Systemd is overkill and plain RC scripts in FreeBSD are a pain).
So IMHO Solaris/Illumos/SmartOS sits nicely between Linux and FreeBSD.