Mark Wahlberg made his fame by rapping and showing his underpants. Despite the extrovert briefs and the ever-present Funky Bunch that still, to this day, follows him everywhere he goes, Mark Wahlberg seems like the more down to earth one. He's also less successful, and generally warrants B-movie roles like The Happening. Matt Damon is the more Hollywood of the two actors: He was, at least briefly, the go-to A-Lister for white guy screen filler. He gets both the high-profile and arthouse roles - he's the guy from Good Will Hunting, after all - and you can apparently ride that cachet for ten years, at least.
So it's quiz time: Who was in the Brothers Grimm, the ill-advised tongue-in-cheek action reboot of a collection of fairy tales? That's straight to video caliber premise, right there. Gotta be Wahlberg.
What about I Heart Huckabees, the rambling existentialist lecture-comedy? Art house fluff. That's Damon all the way.
Now here's where it gets tricky: They're both proud former Bostonians. Two Southie white boys, one trying to hold onto his roots, and one still struggling to overcome some criminal connotations. So which one was in The Departed - the Boston mob flick about both of those things? Oscar quality says Damon; but gritty subject matter says Wahlberg.