Corporate Social Performances (CSP) has a determining role in the Environmental, Social, and Governance (ESG) scores of firms. Corporate Social Responsibility (CSR) strategy scores in the ESG ratings can provide a measure of the CSP concerts of firms. We observe in this research, the mean differences in the CSR strategy scores and the ESG scores of firms in select developed economies such as; US, UK, Japan, and Australia, representing different geographical regions globally. Thomson Reuters ESG scores based on ten major parameters and over 400 company level indicators are used to empirically evidence the study. The initial data of average performances on ESG indicators of 939 firms considered for a period of five years from 2014 to 2018 is analyzed. The results imply that the mean differences in the CSR strategy scores are not significant, considering the developed economies, deliberated in the study. Along with that, we observe a significant mean difference in the ESG scores of Australian firms considered for the study, in comparison with the firms from other developed economies. And the study confirm that the CSR strategy scores are significant predictors of ESG performance scores of firms in the developed economies considered for study.