No it isn't. This isn't a case of MTU, YTU, OTU, etc.
This is a case of someone laboring under profound incomprehension deciding that 1+1=308 and then pronouncing all of mathematics wrong because it produces a result of 2.
This isn't about policing for orthodoxy. If McPerth had said "I don't like the history of the Rebellion so I changed it for my game... no one would bat an eye. He isn't saying that however.
McPerth is saying the history of the Rebellion is wrong and that GDW made a mistake when they wrote it. Not wrong or mistaken for him, me, or you, but wrong and mistaken for everyone. His assertion, however, is a result of his fundamental incomprehension of the relationship between the game's various rules and the OTU's history.
McPerth actually thought GDW used HG2, TCS, and/or some other ship combat rules set to chart the naval campaigns of the Rebellion.
Telling someone they're suffering from a gross conceptual error is no more policing orthodoxy than telling someone their hair is on fire.
McPerth has been nattering on about how ship losses in the Rebellion cannot be squared with HG2 or TCS for years now and I've been trying to explain his conceptual error to him for just as long.
When someone cannot or will not understand, sometimes a "dope slap" is the only thing that works. McPerth got that dope slap in this thread and, hopefully, he'll now be able to comprehend his incomprehension.
Whatever McPerth wants to do in his TU is fine by me. However, h is not going to keep claiming that GDW got it wrong.
First of all, I've never said the history of the Rebellion is wrong. It makes an interesting setting to play, and, being that its goal, it cannot be wrong.
An entirely different thing is that I say it is not consistent with the rules expected to have created this setting, and this seems to me quite odd, and no "dope slap" will change this view (though some good reasoning might).
As I see it, there are two kinds of RPGs: those tied to a previously established setting (as SW, ST, MERP, TOR, etc...) and those free from this tying (As D&D, Traveller, etc).
In those that are tied to a previously established setting, the game rules should conform with the setting, representing it as good as they can, as you said about wargames and real history.
In those free from this tying, though, the settings should be established to support the rules in play, and I keep thinking that there should be posible to recreate them with the game rules. If the setting does not conform with the rules, it seems odd to me, and that's the case of Rebellion history (as well a some other parts of OTU history and games).
You see it as a conceptual error, but the only explanation you give to me is that they use different rules and paradigns, while I understand they try to represent the same universe, and so the same paradigms.
So, when I'm asked
How did you derive your estimates? And can you point me toward the source of the Rebellion losses? (I can only find commercial losses.)
As the question relates to HG after battle losses, I can only explain my estimates and say that they don't match in any way with those loses, while pointing him the source of them.
Just today you cautioned posters about conflating real history with OTU history and how OTU history is not "... just real history pastiched over the setting". You further explained that reducing OTU history "... to the level of "Borrowed History" is a gross oversimplification. And quite unfair to the creative minds who formed GDW."
Your same caution holds true here. McPerth has been unfair to the creative minds who formed GDW because of his demonstrably false belief that they used the game's rules to determine the course of the Rebellion.
I'm sure you know better than myself how GDW or GDP memebers determined the course of the Rebelión, and I never wanted to be unfair with their creative minds (after all, they were those who created one of my favorite games), but you are making me right when I say this course is imposible to reach with the rules given in the game, and that they did not use them to reach it.