How would his skills compare to the best actors of today?
Back in his day, Laurence was considered to be the greatest actor alive. Would that still be the case if he were still alive?
At his best, Laurence was a marvel. His sensibility in molding his rhythm, voice and body language was unmatched in his time. However, he was not really a transformative actor. I am not sure he could ever give a performance like say, Phillip Seymour Hoffman's performance in Capote, or Daniel Day Lewis in any of his films. His screen presence, and natural gifts as an actor would have served him well today, and he would undoubtedly be a very successful actor. However, the greatest actors of this age should not just be excellent "performers". They must also be able to to immerse themselves in their character to the extent that they cannot be recognized. I don't know if Mr. Olivier had that ability.