I wouldnt classify him to a bad actor crowd that can destroy a movie but i´d definitely put him in the group of good actors who have no integrity in choosing their roles, unlike for example Christian Bale who always choose his roles very carefully.

The bad he did that is relevant to this discussion was Daredevil and i wouldn't call the script he got handed over one that can make a good movie.

Let pretend the script and directing in TDK, Scarface and Training day have absolutely nothing to do with its success, then you´d have a good point.

@Nemesis4567 I get what your saying but I disagree too. The script has to be good and the actor has to pull off the good script for a film to be good.

For me I don't think he will make a good batman I am also not to sure where anyone can go with batman after the last 3 films as I loved all 3. I am not a big super hero fan but for me all 3 of the batman films blew me away because they got the cast and the scripts right and I really don't know how they can top it and I also don't see batman and superman in the same film to.

I maybe wrong and I will give it a chance but still not sure about the idea.

Actors act.

Directors - Direct.

If an Actor sucks, the director can't do much with it.

If a script is crap, an actor still needs to make the film his own.

Afleck would be ok i guess, but BATMAN has been overdone recently imo.

And adding superman to the role isn't a good move.

"you cant have vin diesel playing austin powers" Even though you're right about that, you're going into extremes to prove your point and in this case it doesn't help. Diesel and Austin Powers have extreme physical differences as well as personalities, while Ben Affleck and Bruce Wayne do not. He's 6'3", has that strong-looking jaw (that is important!), and is already working on bulking up for the role... so I read. So, physically he will fit the role, especially when he wears the Batman suit. If a 5'9", receding hairline, and semi-good built Micheal Keaton can look good as Bruce Wayne, I don't see why Affleck wouldn't look the part.
As far as his acting goes, I think he's done enough lately to prove he can act damn well (Hollywoodland, The Town, Argo), so I don't think it'll be hard for him to pull off the dramatic nature and charm of Bruce Wayne/Batman.
The voice is the only thing I'm wondering about. When he screams it can get pretty high-pitched (for a guy), but when the hell does Batman ever scream, eh?

That cowl was honestly the worst cowl ever made, everything about that batman suit was awful...He didn't even seem like Batman you could have put John McClaine in place of Batman and it would not have been any different

I watched the Keaton Batmans recently too and thought they aged pretty well, more of a camp comic book feel than the last trilogy though. I think Affleck should get his shot too, I'm not a huge fan of his but he has range and I'm sure he'll at least be better than Clooney was and that's all I can really ask out of Bactors (Batman actors).