They are not made by the same factory. The compounds used are not the same hence they are different pads.
It's not terribly difficult to colour match pads to give the impression that they are something they are not. That would be the case here.
What are the compounds used by the Reynolds pads and what are the compounds used for these pads -- i.e. can you be more specific for the sake of furthering knowledge on the topic? And what are the implications of these different compounds: Does one dissipate more heat than another? Does one wear faster than another? Is one louder than another? Perform better in the wet than another? Etc.
All good questions.
The actually chemistry is protected by the brands and their suppliers. and, as I don't own these brands, I neither have access to nor, if I did, would I publish it in an open forum.
The differences between pads are pretty much all of the above in terms of performance. We've been focused on heat dissipation in our testing with dry/wet performance being next and brake squeal a go/ no go factor.
We, with our pad supplier and a local assembly factory, tested several open mold rims as well as the rims we supply for our OE customers and one VERY well known name brand. We found that with the open mold rims it was prudent to use the pads they supplied as they were best matched with the specific resins used each individual open mold vendor and performed well but not always the best. For warranty purposes I'd still suggest using the pads supplied.
The OE rims we tested used High Tg materials and once we determined that there was a lot of latitude in terms of pads used we were able to move past heat and look at other factors to best pair pads to rims. Our pads supplier then tweaked the compounds a little and we made our final recommendation.
Field testing was then done which bore out the lab tests but with a limited number of pads as the point was not testing for testing sake but to pair a compound to a specific rim.
I know that doesn't directly answer your question but the fact is I can't for the reasons I mentioned above and because I'm not a chemist so I can't say in any meaningful way.
What I can say is that there are differences in the aspects you mentioned and pad compound, when paired to specific rims does yield different results.