Not sure if this is a dumb question. Would the standard cams be dialled in perfectly, from the factory
There are no dumb questions.
Standard cams are in standard position, and they aren't able to adjust with standard, unmodified, sprockets.
The timing can vary a bit, when the timing chain is wearing or the cylinder head surface has been grind.
Timing of my standard cams was 99°/104°, if I can remember correct.