It's not always the case that a high reply/like ratio is someone being "owned", but it's obviously more concrete than tea leaves. Twitter's lack of a real downvote/dislike incentivizes people to reply to a bad post without leaving a like, and in my experience it's a pretty good metric. (The main exception is when a tweet is a prompt that intentionally asks for people to reply.)

Also I feel like I should add that "ratio" is a confusing term, because it can refer to the above example `reply-count / likes`, but can also be when a reply gets more likes than the tweet it's replying to: `reply-likes / OP-likes`.