That would be an interesting comparison video for Dave:
Comparison of serial decoding on Siglent SDS1000X, Siglent SDS2000X, Rigol DS1074Z, Rigol DS2000A,
GW-Instek GDS1000B, GW-Instek GDS2000E.
When the engineering manager of Siglent and Rigol will see this video, he will pinpoint his engineers to change the implementation, and do it in the same way as the GW-Instek GDS2000E.
The engineering manager might even approve a purchase order to buy a GW-Instek GDS2000E for further examination in the sweat workshop