No misunderstanding. I’m familiar with the Steemit platform and have had an account there with over 1000 followers.
I think what you are misunderstanding is that BlockOne, who are build EOS, are building an Operating System upon which decentralised apps (dapps) can be built.
A dapp developer could, in theory, build a post/comment/like system that works exactly like steem, but they wouldn’t be limited to following that model, they could even mix and match. In other words, EOS is much more flexible in theory, but it would need a successful dedicated dapp to compete with steem directly in the content reward market.