yes, but with the minor changes can cause big results. Much of what we buy comes from the same place, but the difference is the testing and R&D they do to make it excel over other companies with closely related parts/build style. This may apply to crossfire, it may not, just stating a little generality so to speak.
Alright makes sense. just because it make look similar there could be a difference in # or thickness of spiders type of coil flat round ect.