Green Lantern was just mediocre like so many big budget blockbusters.
For me, GL wasn't a bad movie at all; it was flawed, but reasonably entertaining. It just had the bad fortune to come out in the same year as three really brilliant superhero movies, Thor, Captain America
, and X-Men First Class
, so it felt inadequate by contrast. If a film with this same story (though obviously less advanced VFX) had come out earlier in the decade, at a time when we had some good movies like the first two X-Men or Spidey films and Batman Begins
but also a lot of weak ones like Catwoman
and Fantastic Four
and Ghost Rider
, I think it would've been regarded as one of the better superhero films. It's just that the bar has been raised so much in the past few years.