Yep, I can confirm the same. I worked with three macs connected via LAN and a simple sync via a master works very well.
Also, maybe someone could disagree, but in my experience not-compressed movies (even full DV) are lighter for the machine.
M
I have synced several computers on a LAN successfully using a master,
with a counter run by a [metro], sending frame numbers to the slaves via
[netsend] and [netreceive], sending the frame number to each [pix_film]
object.
This way the master can also play audio which remains in sync, and
pausing, scrubbing etc are all possible.