Is it worth?

[Mr Grumpy]

Playing vs the AI in a big campaign?

Bulge44 for ex... can i expect some cohesive behavior from the AI?

Personally I would say no, but it would depend on how good your standard of play is also and the level of competency you expect from the AI.

Ever since I played my first ever game of PzC Sicily against the AI when I slowly surrounded the whole HG div while they sat and watched me, I have not bothered with the AI although I understand that there have been improvements to the AI since that title was released.

The general rule of thumb seems to be that the larger the scenario the worse the AI performs.