if it's done well.
This phrase pops up so often when discussing comic book movies that it's pretty much lost all meaning.
Doesn't it pretty much apply to everything across the board?
A novel adaptation.
An original screenplay
If something isn't done well, either adapted, created and then effort put into crafting the visuals and time put into proper casting then it will be crap.
Done well is an equal opportunity statement.
Not sure why it only surfaces, or mainly, in comic-to-film discussions.