Which 2.4ghz configuration has got better COVERAGE?

Configuration 1:

2.4GHz:

11g 6Mbps:-97dBm, 11a 54Mbps:-77dBm

11n VHT20_MCS0:-97dBm, 11n VHT20_MCS8:-72dBm

11n VHT40_MCS0:-92dBm, 11n VHT40_MCS9:-67dBm 5 GHz:

11a 6Mbps:-95dBm

11a 54Mbps:-77dBm

11ac VHT20 MCS8:-71dBm

11ac VHT40 MCS9:-67dBm

11ac VHT80 MCS9:-63dBm

Or

Configuration 2:

2.4 GHz:

11g 6Mbps: -96dBm

11g 54Mbps: -78dBm

11n HT20 MCS7:-77dBm

11n HT40 MCS7:-74dBm

11ac VHT20 MCS8:-73dBm

11ac VHT40 MCS9:-68dBm

Thanks