With smaller data sets... the numbers will be more erratic...
You could go in 10 times and get 1 darklight piece every run and assume the number is 20%
But on a long enough timeline... with enough data points... the actual drop rate would be more consistent across all linkshells.....
Like if everyone tested it over 5,000 runs... I am sure the numbers would be a lot closer to each other
With that being said... in the absence of proof that there are any other factors.. and no one willing to test if there are... We must assume there are not
Perfect runs don't increase your drop rate directly...
But they do increase your speed times, which means more runs in a given amount of time....
Shaving 3 minutes off each run could allow for an extra run at the end of the nite before people have to go...
It's like Pixie hate, the direction you face, the moon phase
People love to believe in myths