You are basing your comparison off of things that don't match, fuel consumption listed is not max RPM for the motor so yes it will be lower for one. Your 180 is bigger and heavier than all compared 180s and until it shows max rpm fuel burn people will assume it burns more, the 26,000 extra RPM will increase fuel consumption substantially. New gen motors will have brushless starters, brushless pumps, ECUs on the motor, internal sensors and valve, bus type protocol and digital vs analog.
FYI your motor is listed with a XICOY V10 ECU, which is no longer produced and outdated. Specifications have nothing to do with the quality and technology used to produce them so don't confuse that when talking about old vs new.
Cheers, good luck