Clearly a lot of people don't care about that stuff anyway and the people who DO care just get annoyed this way.
Actually, I reckon that's not necessarily the case. The very fact that they're using 'historical accuracy' and 'authenticity' in their marketing suggests that people DO care about such things.
Realism does seem to be a big thing in newer games, as hardware allows for more realistic graphics than ever before.
I generally get the impression that many gamers do want to see more realism in games. One example is in the FPS genre. Call of Duty is often referred to as the most arcade-style triple-A shooter, and its nearest competitor, Battlefield, is considered more realistic. Fans of the latter often use this in arguments over which franchise is 'better'.
Call of Duty tends to sell better because it offers the most fast-paced action and instant gratification, thanks in part to its somewhat arcade-y mechanics.
However, even the most recent Call of Duty has been advertised as 'more realistic' than its predecessors, so clearly its developers want to cater for those who seek realism, in a bid to keep the top sales spot. Battlefield, by contrast, appears to be going slightly in the other direction (without compromising realism for the most part), but for the same reason.
And far away at the simulation end of the spectrum lies ARMA, reserved for only the most hardcore PC gamers with an interest in tactical shooters.
Do I even need to say that it hardly sells anything like CoD or Battlefield, or that its reviews are comparatively mediocre?
I think this demonstrates quite well that many games these days are trying to strike that perfect balance between 'realism and arcade' as we commonly put it.
That appears to be what's going on with AC4. Although the gameplay is clearly meant to be fast-paced and fun, there IS realism and authenticity there, but perhaps one needs to dig beneath the surface to find it.
[Insert buried treasure joke here.
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