Further, when examining the efficiency through which AEWs spawn TCs (genesis efficiency) most studies examine counts of AEWs against TCs forming from AEWs. This method does not investigate properties of the AEWs however. In this study, we take a different approach by examining the Eddy Kinetic Energy (EKE) of the AEWs calculated using gridded reanalyses. The correlation between seasonal mean EKE and TC numbers is not highest in the mid-troposphere where the peak EKE of canonical AEWs is located. Instead the correlation is highest in the lower troposphere and corresponds to the southern track of the AEWs. This suggests that mid-level AEW activity is a poor predictor of TC genesis while lower tropospheric diabatic effects due to moist convection exert stronger control. We also show that genesis efficiency is not strongly limited by AEW activity except when there is weak low-level seasonal mean AEW EKE. This has implications for seasonal TC forecasting.