No basically every film that receives garbage reviews and poor word of mouth will be deemed what it's deemed. Not since summer 2008 have I personally seen a summer perform in such a way.
As for prometheus, as "good" as it's doing, I can only imagine would "good" it would be doing if it was received any better. I admittedly haven't been following film as closely as I usually do(I'm busy this year) but it does seem as though Prometheus is the butt many a joke post release.
I suppose Mad is doing well. Gotta give it up for that market, they treat their own well.
But seriously, if it's not DarkShadows one week, it's Battleship the next, or Men in Black or Snow White...even Lincoln is "under performing"