Thats about right. I am very disappointed by the AI for the following reasons:

1) Unlike STW and MTW it doesn't have the sense to mass its units to crush you on the strategic map. Instead it attacks with pitiful bands. The Roman factions seem less prone to this.

2) The enemy cavalry Generals are completely suicidal making a battle against a named character incredibly easy. No matter how many stars he had, once that man is dead the rest is just a mop up. Suicidal Generals happened in the other games as well but in RTW it seems worse. Besides which you'd have thought CA would have fixed this. They've had numerous chances throughout the series.

3) AI for sieges is useless. I've yet to see them assault a city. When defending the ybehave just as described above. They wander around the walls getting knackered and shot to ribbons. Once you are inside they retreat to the plaza. Once here they may send one unit out to confront you. Once they are dead the rest will sit there on the plaza in a shower of arrows doing nothing. I tried attacking a plaza held by heavy cavalry with just archers once and still they made no move to stop the arrows. They could have wiped out the archers easily but no they all died instead. Poor.

4) Their fleets, no matter how superior to mine, never blockade my ports and will never move to break a blockade (though they might break one by accident). In fact I hardly ever get attacked by an enemy fleet. I've attacked them and my allies have dragged me into a few fights but that is about it.

The AI just seems lazy to me.