Likes pretty much everything in every caliber.
I love what you're going for, and I also understand the argument that splits aren't the be all and end all, however, if the intent is a "realistic" test, it's extremely likely you won't be able to rely on a single shot to stop someone. While draw speed and first shot accuracy and transitions/moving targets are more important than stationary target split speeds, the ability to put repeat shots in a meaningfully small target zone is something that shouldn't be overlooked.
I will have to completely disagree that it is an important measurement here. As stated in my original post, I have measured this many times and the difference is literally in hundredths of a second for my splits, I don't think that tiny delta is important or significant for what I am trying to evaluate.
It's not a raw .25 vs a .33 split I'm worried about. It's the fact that, for me, with a smaller gun, my group size or ability to keep the shots within say, a B8 at 10 yards at that speed, will also degrade. To keep the same level of accuracy, I'll be even slower with the smaller gun.
It's not the most important thing at all, and maybe it doesn't apply to all shooters equally.