Not at all - this is an action movie and so doesn't require shakespearian type dialogue spoken by seasoned National Theatre "ac-tors". Having said that Dwayne Johnson and Sean William Scott (I have assumed you're referring to them) do admirable jobs - I was particularly impressed with The Rock.
Yes, it's cliched - Christopher Walken actually dares to utter the line, "You're already dead - you just don't know it yet", but that's all part of the fun!
The Rundown is the kind of movie where it helps to kick back, chill out and go along for the ride. I thoroughly enjoyed it