I find PTR completely inaccurate, at least for my stats. I have every hand I ever played on the Merge network and I am around a 3.5bb/100 winner over all my hands yet PTR has me has a pretty big loser. Just this past week alone, all the sessions they have posted for me are way way off.
Actual: +60, PTR: +21
Actual: +20, PTR: -31
Actual: +30, PTR: -12
I win 110 and they have me losing 22. Thats almost a 12 buyin difference in just one week. I understand they don't grab all the hands, but wtf.
I also noticed that they even have some of the bets wrong on the hand history replayer. I don't remember the exact hand, but I 4bet a villian to $5.35 in a hand and PTR had the bet as $4.75 AND the final pot size incorrect. Not getting all the hands is one thing, but getting the pots wrong is another. I just don't get that.
I guess I am just warning anyone that plans to subscripe to their premium service, that the stats that you buy could be completly wrong. Be warned.