From a business standpoint, why have 2 identical powders in different containers? Answer: Shelf-space. From a marketing standpoint, you maximize your exposure by having more product. Unfortunately, with respect to pistol powders in this range - there is little competition. With production being a sporadic as it has been, and little competition, it makes no sense to run 2 identical lines. There would be absolutely no love-loss to simply make a public statement that the powders are identical [now], so we are eliminating 1. But, they haven't.
But, if you wanted to phase out 2 similar powders, what would be the easiest to do? Tell anyone who contacts you that it's the same powder and let the forums take care of squelching the noise.
As written, my data shows different results for the 110 and 296 in respective cartridges. Yes, my data goes back to the 80's. But, from a business perspective, it makes no sense to run 2 identical powders.
FYI - In the 90's I called Glock [Smyrna] several times. They swore there was no such thing as a "generation 1, 2, etc" Glock pistols. They were all Glocks...and you can't shoot reloads through them.