Bear in mind, Minnesota started by having Shunyata power cords first...which is what led them to ask Shunyata to come...there is a bit in the middle of the video where the Doctor says they tried the simple cables first, and then when they did have an improvement (not a big one but a measureable one), then they asked Shunyata to come with the whole menu of options, which is when they got the 'artifact so small it was not even measureable' effect.
I also note the hospital evaluated Shunyata products in an ascending order finding the more Shunyata products they applied to the system, the better the resolution capabilities of the heart monitors, and they are using Shunyata power cables. While I suspect the power conditioners made a greater difference, i also believe given the scientific way in which they approached testing Shunyata, they had a reason for using Shunyata power cables which is that they work.