Luck recognizes coverages very well but he doesn't recognizes blitzes nearly as well. That's my opinion, of course. I've watched the same game you have and you're free to have a different opinion. There was one third down in particular where Luck shifted the protection to his right and the blitz came from his left, leading to an errant throw and a punt. In the broadcast you can even see him make a face toward his sideline that he knows he screwed up. It happened a few other times as well. It's not like the Raiders are some dynamic defensive team, outside of Lamar Houston. But at different times they sent corners and linebackers and got guys running free at Luck. He was sacked four times, twice by defensive backs.
Blitzing is our identity. I don't think we should go in there with a game plan to totally change that identity just because Luck is a dynamic player. I give him all the credit in the world, but he's not God. His offensive line sucks and his running backs aren't much better. If we really have to worry about playing into their hands how good can we really be on defense? Make them worry about playing into our hands.
Don't get me wrong, I'm not saying we're great. I think as a fanbase we're a little beaten down from disappointment at so much mediocrity. But I think this is a good chance to find out.