We'll just have to wait and see. Blaming Affleck for Daredevil is like blaming George Clooney for Batman and Robin - fuckers had zero material to work with, hack writers and directors, and charisma-free co-stars. You're only as good as the material you're given.
Sure, Affleck may have sucked as Daredevil if he was given a word-for-word adaptation of the Elektra saga or Guardian Devil...but then you could blame him specifically.
And the man's got two Oscars now - including a Best Picture. I've gotta think he'll have some creative pull.
Not saying he'll crush it - just that we'll see. It can't be any worse than the first Man Of Steel.