I also actually tried cmux, but I didn't like they way it did tabs. I like my tabs top-level and not inside panes (but I realize this is a personal choice).
We also do good GH native integrations (linking PRs, showing statuses, and linking GH issues). We also do AI status indicator even for non-focused terminal panes. You can also manually mark a worktree as 'unread' (kind of like a star in Gmail) In addition Orca has a built in file viewer, search, git diff viewer (see all changes like VsCode does)
Also cmux is Mac only (doesn't matter for you, but for others)
So tl;dr -- alot of small things. But those build up for me in a tool that I basically find myself living in
^ I updated the post to reflect some of these