Yup, all compliance is, is the "right" to get the car rego'ed. The RAWS scheme means that it is recognised in all states.
If the Car fails the RWC after leaving the compliance shop, then the shop could possibly
lose their RAWS licence (assuming you have'nt touched the car), as compliance means that the car "complies" with all Australian ADRs (Design rules), which , by implication, means that it is roadworthy.
However, if you've added bigger wheels, exhaust, etc... after compliance, but BEFORE the roadworthy, then there is no guarantee it will pass. Do these things AFTER you've got your rego.