Good movies are made more by the behind the scenes decisions than by the actors actually in it. You cannot say that Sean Connery is bad, yet I think Highlander-2: The Quickening is atrocious and most fans disavow it ever existed, Connery included.
The only thing that keeps me from flipping a table is the fact that Kevin Smith is friends with Affleck. Hopefully they can use Kevin as a consultant to at least greenlight the script or something.
If it is Kevin Smith approved, it could be good.
To be fair, Batman does NOT need a major hollywood star. Batman is already famous, and anybody can play that role. The supporting roles for super hero movies are where you need big names to help keep those characters from being buried.
I agree that the sum of a movie needs more than the star - Clooney made a good Batman and an excellent Bruce Wayne but the Schumacher directing, set design, script and miscasting across the board made Batman & Robin dire. Just as theres no doubt Joss Whedon's script and direction made The Avengers what it was, just as Nolan made the Dark Knight trilogy - there can be legitimate doubt about the differences in quality if perhaps Michael Bay or George Lucas had made those films.
I disagree that anyone could play Batman - but there is a case that unusual casting choices in the Batman films have often been proved right - Keaton, Pfeiffer, Hathaway & Ledger are the most obvious and I'm warming to Affleck as Batman.
Kevin Smith's Batman books are good -but are they the same calibre as Loeb, Synder, Moore or Frank Miller? Plus don't forget when it comes to Affleck and Kevin Smith - only one of those cats is an oscar winning script writer & producer, and Golden Globe winning director
Tronsky