Several Moscow 42 Questions

[76mm]

Thanks. I think I got my impression from the following text on VolcanoMan's site:
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These scenarios are tailored specifically with PBEM in mind and, where possible, are products that take into account the suggestions of the wargaming community. They also make use of the latest PDT file rule enhancements so that they utilize the latest rules and changes which often occur in the engine many years after the game's intial release (therefore, it is necissary that you update/patch your game to the latest version available from the game developer's website). Because it often uses the latest rules and enhancements, the _Alt scenarios are also something that non-multiplayer users may way to try out. In no way is any of this meant to suggest that _Alt scenarios are superior to the stock scenarios, they simply offer an alternate experience and perspective.
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But that explanation doesn't mention anything about the OOB changes referred to in his entry re the McNamara DB, which are more appealing to me:
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he McNamara database (aka "Project McNamara") was a name that was given to a database that was created for use with Panzer Campaigns (PzC) games with the intent to standardize all unit values...The end result is a database that provides consistency to each game, qualitative advantages to certain equipment, and a historical spectrum of performance across weapons and vehicles where everything is scaled off of one another.
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So, it sounds like the PDT and OOB changes would be worth having, although I don't understand what they have to do with PBEM...