MMPR
Read my smart post
Please -- DC invented the whole "get a respected and critically adored actor in order to have your movie-based-on-the-funny-papers taken seriously" thing. Marlon Brando? Gene Hackman? Jack Nicholson?
They still attempt it, but go for actors who are not only critically acclaimed, but "trendy" -- people like Christian Bale, Peter Sarsgaard, Amy Adams and Michael Shannon.
That said, they needed someone wayyyyyyyyy more impressive -- and older -- than Eisenberg as Luthor. It's like Zack Snyder, that genius, heard that people wanted Heisenberg in the role, and thought they meant the kid from Adventureland.
DC did that back in the day and Christopher Nolan did it for the Dark Knight trilogy but I found they've been lacking in the recent movies. IMO, Marvel and Kevin Feige are still putting more money and passion into their casting

