I know for a fact that experts can't tell Stradivari from modern high quality violins, can't tell if two glasses of wine are from across the world of each other or from the same bottle, rumours are they can't tell whether they're listening to a recording or live string quartet.
There is quite some variation between real piano actions of grand vs upright, 18th century and modern, German vs French vs English action etc. There's also no magic about either of them and no fundamental reason why an electronically coupled action couldn't exactly mimic them.
I know for a fact that experts can't tell Stradivari from modern high quality violins, can't tell if two glasses of wine are from across the world of each other or from the same bottle, rumours are they can't tell whether they're listening to a recording or live string quartet.
https://www.science.org/content/article/million-dollar-strad...
https://www.theguardian.com/lifeandstyle/2013/jun/23/wine-ta...
There is quite some variation between real piano actions of grand vs upright, 18th century and modern, German vs French vs English action etc. There's also no magic about either of them and no fundamental reason why an electronically coupled action couldn't exactly mimic them.