I'd say totally separate.
Once a console cycle has seen it's EOL and has been discontinued, any sales after that should be separate. To go back and compare hardware from early gens to find it was different than how it actually played out because the hardware was rebooted much later down the road doesn't make much sense. It's not the same type of hardware either.
Same basically goes for software. The bigger problem with the software is that it's all bundled with the classic editions and it's simply part of the entire package now, and none can be purchased and added, so it doesn't really make sense to count that towards individual game sales from a discontinued console long ago.
Things have changed in the past couple decades with slim versions of consoles and game bundles, but to try and impose that on the distant past just doesn't make much sense.
