Your capabilities effect the correct answer for you...
You know, you can evaluate the original question somewhat objectively if you know what you are capable of doing.
For instance, let's say you are capable of a 1.4 second draw, .2 second splits on the same target, and .3 second splits transitioning to another target.
If you go 2-2-2, it will take you 1.4+0.2+0.3+0.2+0.3= 2.4 seconds before you get the first shot on the 3rd target. If you go 1-1-1, it will take you 1.4+0.3+0.3= 2 seconds to get a hit on the third target. Now, what percentage of BGs will be incapable of making the shot in 2 seconds, but can make it in 2.4 seconds? Probably a significant percentage, and if one of them is 3rd in line, you are going to regret going 2-2-2. Now, if you are a speed demon, and you can do a 0.5 second draw, 0.15 splits, and 0.18 transitions, you are looking at 1.16 vs 0.86 seconds. You can probably beat all 3, regardless of how you approach it. And, if your draw is 4 seconds, it probably doesn't matter how you do it either, because all 3 of them will likely get hits on you.