I think, for an actor, that the SAG Awards is more important than the academy awards in that with the SAG awards it is a body of your peers, people who do what you do for a living, that are telling you that you are the best at what you've done by voting to give you that award. To me having your peers compliment you in that manner means more than having someone who really does not do what you do for a living decide if you were the best at something or not.
At least that's how I would feel as an actor and a member of SAG.