This topic is very simple for anyone who has any idea how the two input methods work.

KB/M left-right strafing:

1. Press A - instantly 100% speed strafe left
2. Press D - instantly 100% speed strafe right
Commentary: It is impossible to make the keys do less than 100% instant movement speed. They are digital - you move 100% or don't move. So you can - in fact, it is hard not to - achieve instant change from 100% left to 100% right by alternating A and D.

DS3 left-right strafing:

1. Push left on DS3 stick - instantly there is something like 5% movement left.
2. Then it is 10%, then 20%, then 30%, as you move the stick further left.
3. You only reach 100% movement left speed with the stick at (I believe) 95% to the left.
4. Push right on DS3 stick - you first go through 90%, 80%, 70% LEFT (i.e. the opposite of what you want...) as you move the stick from it's 95% left position.
5. Eventually you reach the central (neutral) position, then 5%, 10%, etc movement right.
6. You only reach 100% movement right speed with the stick at (I believe) 95% to the right.
Commentary: It is impossible to make the DS3 do more than 5% (approx) instant movement speed. It is analogue - you cannot help but 5%, then 10%, etc as the stick slides across. So you cannot achieve instant change from 100% left to 100% right by alternating A and D; the biggest instant change you can achieve from 100% left is to go to something like 90% left