Sure, here's a vid about the problems with empire, it's basically applicable to Rome 2, particular complaint is centered around a problem core to the engine used:

https://www.youtube.com/watch?v=naQaRIaXyAU

And the picture I posted, that's what collision modelling reminded me of from my childhood and resembles about the same level of IQ of the AI handling melee in CA games starting with empire.