Having same issue with just comments, no stamps.
Any update? Running Acrobat XI. Shows 385 comments in Tracker, but when I open the shared review .PDF it lists a total of 326 on comment tab.
UPDATE: I think I figured out the problem (at least that I'm having). The tracker is tracking "replies" as a comment. BUT inside the PDF it only tracks new comments or when a comment tool is used. If I reply to an existing comment and publish, the tracker goes up 1 in count, but PDF does not. If I add a new comment, the PDF immediately goes up 1 in count. Tracker follows suit when new comment is published.
Would be ideal if the PDF tracked replies too to line up those counts AND it would be nice if the tracker distinguished between a reviewer's comments and replies. Instead of just "new/total". Overall, this is a nice tool for collaboration, but I think some added muscle would be nice when it comes to sorting, categorizing and follow up on comments. Like the ability to create buckets or put a comment in a specific reviewer's bucket for follow-up.
AF