"your definition of technical specifications" => I did not define my own technical specifications or did not define the term. Used the general meaning of 'technical specifications'. Though information available or not available in publicly, the technical specifications include all information about the device.
No. it is not. If two sensors reading are same and within the (technical specifications) range, then the software can not see any different in those readings. If tech specs match, then curves too match. Curves mismatch mean those two sensors are differ in specification.
See how nicely explain product with technical specifications.
Bosch Lambda Sensor
NGK tech-info oxygen-sensors