On almost every website I've visited, when the positive Twitter reactions are posted, people keep bringing up Green Lantern. Yes it did get positive reaction and still did not fair well; it got slaughtered.
But nobody brings up the positive Twitter reactions to X-Men: DOFP, Cap 2 or GOTG. All had positive Twitter reactions and they all turned out great.
Hell, even The Wolverine had pretty good Twitter reactions and people kept bringing up Green Lantern and Origins. The Wolverine turned out to be a good flick.
Good Twitter reactions - Remember Green Lantern, movie will probably suck
Negative Twitter reactions - Told you so, movie sucks
Double Standard.