I agree w/ you, I have a hard time believing any actor could do justice to the drama and the passion of our Lord's agony and sacrifice.
But who knows? After the many attempts to trivialize Christ in the recent past He remains unassailable. At worst this will be just another ham handed attempt at profundity, OTOH it could be moving.
It's not unusual for conversions to start with an entertainment that provokes curiosity. I'm old enough to remember "Jesus Christ, Superstar" doing just that.