As I understand it, M and S use altcoins in BTC units of measure because acquiring a maximum amount to BTC before the next BTC melt-up is the overriding goal.
Altcoins in USD units of measure are acceptable if the goal is acquiring a maximum amount of USD.
As long as the units of measure are consistent among all altcoins being compared on a matrix or on a spaghetti chart, the results should be equivalent.
Also, I have an opinion on when and why the next BTC melt-up may occur.
This first chart (link provided) will make sense to you after you read this entire post and the short video at the end.
Now watch this video beginning at 3:30, and pay particular attention to the chart at 5:10. At 7:45 to 8:00, all this comes together and will make sense. I believe stocks and Bitcoin will melt up together once the fed stair step rate raising tops out and starts back down.
I don't know when this will occur, but I will be using the first chart above to watch for it all to unfold.
BTW this is my 'be quick to get out' signal chart for my 'Big Three' matrix selection'. Watching it closely this week. Too many red bars and I am out until a new bottom forms. GLTY