I've noticed the difference among widebar datnoids from the collection points as well.
The ones that Wes (fugupuff) imported back in I believe 2003 were very stable, the bars (especially the middle thick bar/stripe) did not fade, which is normally a characteristic of indo tigers. the body may darken due to stress, but the bars were always solid black as well.
But subsequent imports a couple years later showed a drastic difference in quality, because these dats had faded bars when stressed, as evident in Oddballer's picture. I think true Thai widebars don't show this "fading", which also occurs in indo tigers. However, both are equally capable of displaying great coloration, but it's when the animal became stressed that you immediately notice the difference.
This is something that I've noticed on clown loaches as well. Some clown loaches have a nice yellow background with solid deep black stripes, while other clown loaches show a much lighter background that's more pale, along with very faded and indistinct stripes. And it's not due to stress differences, because I've had schools of over 50 loaches and these characteristics were consistent with the individual fish. Some were consistently yellow with strong black stripes that never faded, while others always had lighter coloration and fading stripes.
Is it due to the locality? Or is that a difference from captive breeding versus wild caught specimens? That is, if they are being captive bred at all.
Why are some indo tigers multi-striped while some only posses 3 bars? is that a locality difference as well?
of course, these are simple observations I've made based on what I've seen personally as well as what others have shown me. this is not scientific proof for anything. Even though I haven't seen nearly as many datnoids as someone like Oddballer, I've kept quite a few specimens... maybe over 20 animals over the years and it's a very intriguing question for me because widebars are my absolute favorite fish (forget about stupid pbass lol) and I sought to have the most perfect specimen.
I think the best approach for us to learn more, is to have well informed sellers/importers who knows where these fish are collected, document the differences, and pass that knowledge down to us end consumers. That's why I like to buy from Wes (fugupuff), he not only sells fish, he knows more than just about any other seller out there.
