Ask HN: Has anybody done a comparison of Preact and Mithiril.js?

They seem to have similar goals of being small, fast, and focusing on the view layer, and both seem to have a bit of a following. Preact of course advertises almost-compatibility with React, but I was surprised to find it was also slimmer than Mithril.

I'm just curious for a pros/cons comparison; anecdotes are fine