This isn't limited to commercial software. Until its recent relicensing, GPL FreeRTOS had this turd:
Clause 2:
FreeRTOS may not be used for any competitive or comparative purpose, including
the publication of any form of run time or compile time metric, without the
express permission of Real Time Engineers Ltd. (this is the norm within the
industry and is intended to ensure information accuracy).
I suspect this makes it incompatible with FreeRTOS itself too, as the GPL allows redistribution only if no additional restrictions are stipulated. So there was legal way to redistribute it.
I can definitely understand their fear of misrepresentation.
I wonder if demanding inclusion of their feedback on benchmark into benchmark article (intro or summary) would be more fair than conditionally gagging it..
Clause 2:
FreeRTOS may not be used for any competitive or comparative purpose, including the publication of any form of run time or compile time metric, without the express permission of Real Time Engineers Ltd. (this is the norm within the industry and is intended to ensure information accuracy).