If a game plays in patently stupid and illogical ways as a means of portraying the standard difficulty, that's *Bad Design*.
If a game is functionally unbeatable without unrealistic exploits, foreknowledge and breaking game mechanics, or breaking the AI itself, on the harder difficulty, that's also *Bad Design*.

Holding up the *Bad Design* of their previous games is not a good way to suggest that they will improve on this one - all signs point to the contrary, in fact. It's not an argument in the game's favour.