Re: Will this really be a better film?
As to whether, PG-13 movies are more lenient these days, that's a whole different can of worms.
The Rating (and they do aim for these purposefully) can tell a lot about what they are TRYING to go for. For example if Aronofsky said "We want this one to be Rated R," we can get it feel that it may have brutal violence.
Just because its rated R doesnt mean it will be good. But you can tell some of what they are going for. It wouldn't be rated R if Wolverine just hugged all the bad guys and told them they can't do their bad things here any more.