This is certainly a polarizing game, but I feel that there is a lot to like in RE6 if you take the time to learn the rather complex set of mechanics they built for the game. In a sense, the game has a very "old school" design to it in that it doesn't really explain the potential options available to the player at all. Fully exploiting the mechanics requires a bit of trial and error along with a healthy dose of patience. I absolutely hated the demo initially, but I gave it a chance and pieced together all of the different options. A number of complaints raised by Brad can be countered by specific mechanics present in the game. When you piece everything together it flows pretty well. It IS possible to push through the game without ever putting the full potential of the systems to use but it's a whole lot less rewarding and certainly more frustrating.
This isn't a game for everyone (ironically since the wide variety of scenarios suggests they wanted to target all players), but it can be tamed and enjoyed.
This is the closest thing to a reasonable summary of RE6 I've seen. While I agree to a certain extent and definitely see your point, I seriously doubt that RE6 was intended to be that way.