I will not compare them Because I use both of them when I need them. Generally I used FTX for low gas fee and no kyc but recently I saw some topics that ftx want verification (kyc) . Even then people can use it for low gass fee .
On the others hand ku-coin is  famous  as the alternative for the Binance. Also it ask for partial KYC. So I will not compare them i will Use them whenever I need themit