the KMD translation is long, the block time is 60 seconds, the ETH is 14. New technology, vulnerabilities can be opened, but the ETH was time-tested . KMD is no application in practice, but the ETH is widely used. To protect against the attack of 51 Komodo uses bitcoin blockchain, but ETH is independent of bitcoin and has good own protection. To protect the KMD private key from the network, you need to enter a complex command in manual mode, but the ether has a convenient myetherwallet shell in offline mode
"the KMD translation is long, the block time is 60 seconds, the ETH is 14." This is hardly an issue. I have used ETH and 14 is not always true , I have sent ETH in the past which took 1 - 2 days because of one crypto kitties dapp
"New technology, vulnerabilities can be opened, but the ETH was time-tested" - ETH has proven that one crypto kitties can jeopardize its whole network
Yahoo was time tested and new GOOGLE search engine beat it , horse buggy was time tested and new car technology beat it. So you are saying ETH is old technology? I agree
"KMD is no application in practice, but the ETH is widely used." KMD helps protecting projects from 51% attack by it's dPOW technology. KMD has more than 30 projects building on it's platform ecosystem. The latest is marmara credit which plan to tackle the 200billion usd post-dated cheque market in Turkey region of Marmara. And more projects are coming along or in the pipeline.
"To protect against the attack of 51 Komodo uses bitcoin blockchain, but ETH is independent of bitcoin and has good own protection." KMD is protected against 51% with it's own network because notary nodes always own 75% hash of network, but notarizing to BTC network provide second layer of protection.
"To protect the KMD private key from the network, you need to enter a complex command in manual mode, but the ether has a convenient myetherwallet shell in offline mode" No complex command needed, my grandma know how to use agama wallet
and about online hosted myetherwallet read this article
https://cointelegraph.com/news/myetherwallet-warns-that-a-couple-of-its-dns-servers-have-been-hacked