I'm not going to compare it too much to "Casino Royale", simply because they are two very different movies.
The plot is a little convoluted, and Forster isn't the greatest action director (please, sir, hold on an action shot for more than one second; I don't care about the old broad dropping her tomatoes, but I would like to see more than 24 frames of Bond shooting a bad guy). But this movie is certainly action-packed (love the knife fight with the "geologist", love the plane/free fall sequence, love the explosions in the end).
Though it is action-packed, don't think for a second that the action carries the movie. No, no, no. It's Craig. With little more than a glance, the man provides all the insight an audience needs.