I use a Playstation 2 pad (the sticks) and I assign all the shot types to individual buttons - for example I have Normal shot assigned to button X, Slice assigned to Circle, Topspin assigned to button R1, I have Accelerate assigned to Square, Short Accelerate assigned to R2, Drop shot assigned to L1 and so on....
Everything seemed fine until I spoke to a person I was playing and they explained that Topspin isn't an actual shot but a type of effect put on all your shots, so when he holds Down (+b1) he gets the Topspin 'effect' on his shots, he mentioned that this is how you apply topspin to all shots? Now, I initially thought that Topspin was a type of shot that could be assigned to a button, and when using my R1 button I was convinced I was getting more depth with that type of shot than just using Normal shot (button X). But after speaking with this guy and testing the Topspin shot versus Normal I couldn't really see any difference so this made me think he was right, he is also much, much, much, better than me and his shot depth is astounding so I was confused and so needed to come here for clarification. If this is the case do I need to assign Topspin to a Down or Up function so it can be applied to all my shot types (Accelerate, Short-normal etc)?