[a-r-t]

538 compares polling data against actual election results. What are you going to compare a critic's ratings against? If you compare them to the average critic or audience rating for a given movie, you will end up with a system that punishes any independent thought.

[jandrese]

Box office draw? Or maybe the "legs" (how long a movie stays in the theater). You would need to adjust for movie type though, you wouldn't want to directly compare an independent documentary on an obscure subject vs. Disney's latest Marvel movie with a 500 million dollar marketing budget.

[a-r-t]

A lot of great movies bombed at the box office. Marketing plays a big role.

[HDThoreaun]

Probably the users listed movie preferences