In terms of post count, it feels correct. To display this number, we are using data from the /reviewable/334.json request. Data from /admin/users/29.json request is only used for IP lookup.
The difference between those two requests is that the first one is using User.user_stat.post_count, which counts only public posts (excluding posts in private categories and PMs). The second - admin - request is returning all the posts (including those in private categories and PMs).
In my case, 32 is displayed, even if the admin’s post count is 36.