And I'd add that those drills aren't really about testing a specific scenario related skill. They're completely technique builders.
To get a two second Bill Drill you've gotta hit your grip perfectly, draw and index the gun on the target without any actual conscious effort, and have a grip that's strong enough to control the recoil without causing trigger freeze.
The Blake Drill incorporates all of that, but adds the need for a relaxed posture that lets you move fluidly and your ability to drive the gun to the target directly where you're looking and stop it there without over swinging it.
The Accelerator forces you to recognize target difficulty and adjust your focus and trigger control on the fly.
_____________
Building all of those skills lets you perform in any situation, without training for any one scenario.
