My measurement was based on Jin Yong's usage of the classifier "First Class Fighter", which is used fairly consistently (though not always) throughout Jin Yong universe; that is: only truly terrific exponents are annotated with a "First Class Fighter" title. In Pre-DGSD era, we're told that the team of 20+ fighters who attacked Xiao Yuanshan were "First Class Fighters". This means they were indeed extremely high level fighters of their era. In DGSD, only people of Murong Fu's level or higher was said to be a "First Class Fighter". This means the overall level of DGSD should be much higher than that of Pre-DGSD.