I re-did a better test last year for the attribute effects slider and here is the link:
http://www.operationsports.com/forum...post2042849612
In fact, last year's results are way more accurate and complete, because I took only one player and changed only his shot power attribute instead of taking different players. Because there are many attributes that affect shot speeds like strength for example, always taking the same player is the way to go.
So, my conclusion of the test was:
With attribute effects at 4, attributes of 76 and above are increased while attributes of 75 and lower are decreased.
With attribute effects at 5, attributes of 85 and above are increased while attributes of 84 and lower are decreased.
With attribute effects at 6, attributes of 88 and above are increased while attributes of 87 and lower are decreased.
The difference between attributes of 99 and 90 is the most important with effect set at 3 while difference between 90 and 80 is the most important with effect at 6.
Attribute effects at 4 seems not to be a good option since almost every rating is improved. So, the logical choices seem to be 3, 5 or 6. It's your call.