> Great jokes
Debatable. And by "debatable" I mean "I've seen worst" but "great" might be too much.
> Interesting villain
"People are mean to me, so I will kill them all!" __
> Likable characters
What is this "s" doing here?

Weren't a good number of the reviews for Ghostbusters pre-release basically: The movie is nothing special, and really falls flat on some points. But you should see it to support the message of an all-female cast? And then of coarse the after release reviews came out and were a bit more critical towards the negative spectrum.

Also Sausage Party might just be different enough from it's peers to be seen in a positive light. Critics have to sit through a lot of movies so a lot things the regular audience wouldn't see. And really this is far from the norm when it comes to "mature" western animated material not meant for children. Unfortunately if Wiener Party succeeds well enough you'll get a sequel and copycats in the same vein as the Family Guy copycats and South Park copycats.