I had a motolyser shootout last night and tonight. I took an R1 21.5 and a Trinity 13.5 and ran each motor at 30, 35, 40, 45, 50 degrees timing. I ran each of these on the SkyRC, Tunalyzer, Motolyser, and my telemetry unit. I also ran each test unloaded and then loaded with my Load Master using the 2 ohm resistor bank. This was interesting, and took absolutely forever... my conclusions are that the readings are all over the place, lol.

So caveats:
The Hobbywing Tunalyzer and the Trinity Motolyser both use 7.4v for the test voltage. To try to get close to the same on each test, I used my variable voltage power supply as a power source dialed to 7.75v. So there is a slight difference with the SkyRC and my unit for voltage.

Also, with the 13.5 on my telemetry unit with an esc, at 30* timing and unloaded, the current is actually higher than at 35*. I spent a good amount of time re testing and verifying this. I also ran my telemetry unit in tandem to make sure it was reading correctly. When using a analyser to drive the motor, it looks good. But when using an esc this behavior pops up. I got nothing... I tried both a Hobbywing Juststock, and an XR10 pro gen 1. Unfortunately I can't exactly test a motorlyser and an esc in tandem...

Anyway, instead of putting a ton of pics on here, this time I am just linking to my github repository. https://github.com/trilerian/Dyno-Results

EDIT:
Added graphs with Current vs KV.