XTool, Relitive Compression Test / Power Balance Test

I recently viewed a YouTube review on the XTool D7 scanner. The reviewer indicated that the D7 was capable of doing a relative compression /power balance test. When I contacted Xtool I was told that the scanner can indeed do a compression/power balance test, but the 2007 Prius does not support that function. Before I even contacted XTool I questioned how that could be possible with a Prius. In the past, with other diagnostic equipment on a conventional car with a conventional starter this task was done by monitoring the fluctuation in the current draw. Since a Prius doesn't have a starter, I was wondering how this could be done and as it turns out it can't be. At least not with this particular piece of test equipment. A long time ago, once again on a conventional vehicle, with the old-style ignition system I had a test meter that would cancel one cylinder at a time and measure the RPM drop.
I'm scratching my head wondering if a similar thing could be done on a Prius by canceling either the ignition coils or injectors. Does anyone know if there is a scan tool out there that can cancel either the ignition coils or injectors selectively? I think that the ThinkDiag can selectively cancel injectors, but I don't know if it can do that on a GEN II Prius.
I know the shortcomings of a relative compression test, but I have used it as a go no go test.