I think this is why characters like Deadpool. Ghost Rider and The Punisher never quite seem to be 'captured' in big budget movies, whereas short features like "Deadpool" and "Dirty Laundry" bring them to life as you'd imagine them.
I think the studios just need to accept that if you're going to get these characters right, you've got to accept the R rating.
Now, it could be argued that Wolverine is an exception to this rule. Likewise, some will point to Batman, but does Batman truly qualify as an antihero?
You tell me.