I don't have a strong opinion, I'm not really active on either platform. I have an account on FB, but never actively used it.

From what I read, it appears to me that Twitter is more outspoken about their policies (which are also stricter than FB's) but gives a bit more lenience to people politically aligned with their employees. FB's approach seems to be to have fewer rules but apply them more consistently, and not care as much about their employees' political ideology (which might also explain why FB is massively profitable and Twitter is not).

Twitter feels less like a neutral platform than Facebook, but I wouldn't say that they hand-pick who's allowed to post (and what they can post) either, so they're also not a publisher. I don't know anyone that was ever banned from FB, but I know a few people who were banned from Twitter, which might suggest that Twitter enforces their rules more, but on the other hand, my impression is that Twitter brings out fundamentalist aggressiveness in people, so that may lead to more bans as well.