Honey, "This is the truth and only but the truth." makes no sense <3 :3 (yes, i know that also means nothing is smaller than 3/3). But anyway, i didn't mind the acting in AvPR becase there was only some pretty bad dialogue and the actors didn't quite fit with the characters, or the characters with the lines. So the acting couldn't have been much better.
Just look at Stargate: The Ark of Truth, movie made as a continuation to the Stargate SG1 series. It looks like it's mocking the series, because it gives the characters some lines and actions that are just not them. The acting may be as good as it can be, but itstill looks like ba acting because the roles are bad. Same with AvPR.