I like them both for making fun zsh key bindings, so, so easy.
[0]: https://github.com/kimono-koans/httm [1]: https://github.com/lotabout/skim
But I suppose I'd ask -- faster how?
The linked benchmark really doesn't mean much to me. As an interactive app I judged it on how it felt latency-wise at the CLI. So, I would just try to scroll page-up while find was feeding in the files in my home directory. fzf would sometimes stall on my system (again not scientific) and would occasionally junk up the terminal when it got fed something strange. This could be a problem with fzf or it could have been a problem with how I was using it.
On the other hand, sk at the CLI has been rock solid and very fast. skim as a library needs better docs and has a few other teething issues, but I'm using skim right now, because it feels faster, and because I use it as a library, there is some mental continuity between the two. Recognize and respect fzf in this space, it's just sk is doing it better for me, for now.
Unfortunately that's only superficially true at this point. I recently removed sk support from a project because I was tired of special-casing for it. (ZFSBootMenu).