@james z
Aren't yuta muramatsu and hou yingchao successful using a short pip to chop? They aren't classic defenders but they chop with SP and both are really good.
I don't know anything about chopping but some seem to make SP work.
I have answered this question 100s of times in this & other forums.
1. If a rubber works for a pro it does not mean it will work for even a high level amateur, let alone a low level amateur. I am not saying tabletennis is the only sport that has groupies who will try to use exactly the same equipment that a pro uses but the problem is much more pronounced (bad) in tabletennis because of the delicate (microscopic) nature of tabletennis. For example in my prime playing days, I can pickup just about any $10 tennis racket and play tennis more or less the same level (& my peak in tabletennis has never been as high as it was in tennis in my prime, so I know) but it is far from being so in my case in tabletennis
2. Simply because a pro uses a certain rubber / blade does not mean they are using the absolute best for them. These players still dominate not mostly because of their rubber / blade but mostly because of their supreme talent &
despite NOT using the absolute best rubber / blade. Many of them may even be limited by their contractual obligations with their sponsors & some other may even be getting wrong advice / guidance from their coaches.
3. Many of these groupies or others may be using these rubbers for all the wrong reasons. For example a player may worship Mima Ito so much that they may just use short pips on their backhand even though they may actually have a better looping backhand & a better flat hitting forehand. And of course there are lots of players who use rubbers in strictly social mode (totally non-functional) for fear of social rejection . These are mostly use of rubbers like short pips or anti on the weakside but there are also lots of players who use Butterfly Tenergy for example just & only because it is the gold standard among pros .