Revives (and other stats) Incorrect

At the release day of Nightfall, I noticed that I had lost 150 or so revives from my profile stats. In talking with other people on the forums, I have read horror stories of people losing 1000+ revives from their grind towards the already inappropriately implemented Rise From Your Grave achievement. In addition many of my other stats are reduced, and it seems that it's almost random because some of the discrepancies aren't possible. For example, if you add up the playtime across all classes, it's less than the time I have spent playing Gauntlet.

Unfortunately I can't include a screenshot to aid because I didn't happen to capture a screenshot of my previous revive count before the reduction, so there's nothing to compare it to.