Was talking about Gather and Release sliders. ATT/PO
may fall under the same, 90/90 produces a "more aggressive or forced" outcome over 50/50.
But 2k with ATT/PO a majority of the players are 55/45, 35/65, or some other 100 combo. Leading me to believe that its still a weighted ratio against each other. But that does not wholly discount that higher produces more. 90/90 may be more aggressive than 50/50 but it is still a 1:1 ratio, still meaning that the player would still have equal chance of either outcome, but 90/90 may mean that they will force something due to having a higher number in the formula.
Actually thinking about it now, one is a tendency (ATT/PO) the other is a defense effectiveness slider (ala steal success).