I dont have a clue if all the trades tracked in the record were playable by the members. But I think we can be sure they would not played better because nobody would publish a worser record than necessary for sure.
I have been a member of Allen's room for the period in question and can say that he is very conservative about what calls get into the record. By that, I mean that in the last year, I have seen, maybe, 5 to 10 calls that could not be taken by a person with average skill and an average platform. It is obvious when this happens and every time that I have seen it, Allen has asked who got the trade and if there were several who tried but but were unable to get a fill, then Allen did not count the trade. And he would ask immediately, not later, after he saw which way the trade was going. So, in my opinion, his record is absolutely honest and easily duplicated by pretty much anyone who takes the calls. His style is to make the call several minutes before the trade is triggered, so it is up to you to take it or not.
As for his performance, it is there to see, both in real time in the chat room and after the fact on the web site, and it is real. That is rare in trading. At least for any extended period of time. I know, there are posts like "Wohoo, I made 10 big ones today - if you didn't, you got no business calling yourself a trader ..." but I don't think anyone pays attention to those. I do agree that the Q's may not be the best vehicle for his style - the nq is better for me. And paraphrasing what someone else posted on this board in another tread "YA GOTTA TRADE SIZE". If you can do that, then the commissions are less of a concern. But, if the worst you can say is, trading small lots with relatively large commissions has only made about 100%/year, then that is a good start - but I do agree that there is little margin when trading small size (because of commisison). If your performance slips just a little, it would make a big difference in your bottom line.
I would not expect Allen's style to appeal to everyone, but it is very viable and the results are there for all to see and evaluate for themselves.
I wish that traders' IRS records were public information - I'll bet that would be real interesting.