On *4 DeadPool, he makes countdown tiles in the bad guys strongest color. How is the strongest color determined? I can’t figure that out to save my life…
The color that does the most gem alignment damage.
Requires you to do math (unless someone else knows a better way). You cycle through the opponents players (alive players I believe) and look at the color damage and then add up which color is the strongest among the team.
Edit: I guess I am wrong? Care to explain?
Edit 2: First link I found online explained it the way I did above, which is what I went by. Another link mentioned that it’s first based on the strongest individual color, and if there are different colors that are equal it is then based on the location of player. So the center person’s strongest, if equal to the other 2 players, will be picked. I guess I am totally confused, hopefully someone smarter than I can explain it 
The strongest color is the one that does highest damge per tile. So as you initially said, you cycle your opponents and find which one is the highest of them all. In case that you have two characters with same highest damage on different colors, then it goes in order center, left, right.
thanks for the responses, it is super helpful!