OK so how have Ive been able to play this game for weeks and be completely happy with it - if its so bugged
Are you aware that there are bug threads listing all the problems with the game on all the forums! Are you saying that you have not encountered a single incident. Remarkable!

and a word on the AI

pretty much this is the same AI as RTW, and even MTW and STW - showed similar AI responses to player moves etc

If they havent been able to perfect it in 4 builds of the game - then it certainly isnt going to be changed in a patch
A rather sad fact really! It does use the same engine as RTW. But CA have said that they can fix the passive AI problem with a patch. I hope they can.