Although it affects mobs with a lower ratio to a lesser degree, it's still a significant degree. It's also not part of your design and works against the concept of having brackets which you set. I only chose the green example because it had the most brackets. The figures look bad for other /con's as well.
At the 50% ratio: (over 4400 mobs)
yellow mobs hit minimum 50% of the time.
white mobs hit for minimum 70% of the time.
At 40% ratio, these figures drop by a few % rather than a lot of %.
I /coded over 4000 examples of mobs that have a 50% or higher ratio of mindmg to maxdmg, but edited them out on second thought
Over 14,000 mobs have 30% or higher ratios.. this is not an insignificant number.
Don't let it stop you tinkering, but you might want to rethink the solution.