So I can see the Thunderbolt Ethernet adapter has the same MAC Address (thanks JPA)
I'm guessing you moved the adapter from one PC to the other when you audited them?
In that case, yes, the PCs will match.
MAC Address is one of the fields we match on... as per [url]https://community.opmantek.com/display/OA/Information+about+how+Open-AudIT+processes+and+stores+data[/url].
Remove the adapter, re-run the audit and you should be fine.
Oh - and if you run the audits and get two devices (as you should), then you use the same thunderbolt adapter in both devices and run the audits again - you should still see two separate devices. The separate devices will match on their UUIDs before they hit the MAC Address section of code.