If its PR122 its going to be pretty much lightfast.

If its brighter than PR122, it has some BV10 or another additive like it.

In general, the BV10 color is going to not be captured in photos, videos, scans, etc very well, its far brighter than the normal gamut. You have to see it in person to see its actual color.

If its brighter than PR122 and it says PR122, they are not disclosing something. Yes this happens, there is no requirement to disclose, its entirely voluntary. Further you should be doing lightfastness testing yourself. Usually if it uses PR122 it fades down to that PR122, and you might not even notice on a finished painting unless you had a portion covered up – it just loses some of that intensity.

Note that if you are mixing it with other colors, you can lose that intensity quickly and it can look just like PR122 or even duller which makes its fading even more of a problem, strongly suggest using PR122 for mixing, and reserving this color for just where you need that intense hot pink as a single pigment.

I would suggest getting a dot card from daniel smith, they have various Quinacridone pinks ( fucshia for example, there are about 8 of them ), which are not as intense in color as opera, but give you different rather intense pink values. I started comparing them but kind of gave up on finding something better, as PR122 is pretty close and it largely comes down to taste. What this color is, if its lightfast, is likely one of these other quinacridones.

that could probably be done once, but the cards generally are not free.some of the dots are pretty small , they cover about 1-4 sq inch , maybe a bit more in some colors