As said, only the i1D3 probes use Correlation Files.
But still not sure what you are trying to suggest with the 'generic correlation file' comment.
All Correlation Files are really 'generic'.
There is no specific 'generic' Correlation File.
All other tristimulus probes use Probe Matching.
You can still 'share' probe matching files, in the same way as Correlation Files, but few bother.
Mainly as those with high-end tristimulus probes also have high-end spectrods.
And your last question is impossible to answer.
The i1Pro is 10nm.
That is not good for wide gamut displays.
So it 'may' be worse than a Correlation File, but equally may be better on your specific monitor...
No way to know, other than to compare to a narrow bandwidth spectro.
Steve
Steve Shaw
Mob Boss at Light Illusion