I posted to both, but stopped about a week back on Bluesky as it was really dismally bad interaction - I mean by zero interaction apart from about 2 people. I get way more interaction on Mastodon.

OK I have more followers on Mastodon but I've been on it longer, but I've done 605 posts on Bluesky since it started.

Whilst what I find on Mastodon is very varied, I seem to see a lot of US politics on Bluesky (a disproportional amount). It could be from who I follow, yes, and maybe that'll change as more diverse people come on board.

But I still lean towards Mastodon and ActivityPub, mainly also because ActivityPub is a W3 standard.