Gary
I don't think that will be instructive. You can't really compare someone else's setup and then try to emulate it. Every setup is different, particularly regarding variables like image scale, seeing, equipment and all kinds of others.
For example, here's a screen cap of mine from last night, it's 20" CDK on an AP1600ae mount. It's not perfect, but pretty good. The total RMS is 0.24" but it's also an encoder mount in chile and has a sky model. 4 second exposures with a 4 second delay between exposures. Your setup is completely different and would almost certainly not require this kind of rms.
