It's not about the tick It's about the total dollar value.
Pretend crude is at $112.00
If it goes to $112.10,
for CL, that is 10 ticks ($100) = 112.01, 112.02, 112.03,...
For QM, that's only 4 ticks ($50) = 112.025, 112.05, 112.075, 112.10
So you see the difference? If you still...