file size and quality are correlated.
however different encoders mean that you cannot compare different videos size directly
as x264 takes twice as much bitrate as x265 for the same quality
its the same with cpus, you cannot claim a 3ghz cpu will be faster than a 2ghz one because of architecture differences
but the same 2ghz one overclocked to 3ghz will most likely see gains in performance
file size and quality are correlated. however different encoders mean that you cannot compare different videos size directly as x264 takes twice as much bitrate as x265 for the same quality
its the same with cpus, you cannot claim a 3ghz cpu will be faster than a 2ghz one because of architecture differences but the same 2ghz one overclocked to 3ghz will most likely see gains in performance