It all depends on what you're after--.
If the food itself is primary, and if that food is steak, then Shula's it would be.
However, if a "Disney view" with a bit friendlier "Disney service" is more important, then it would be California Grill.
Been to both recently and both are fine spots. Shula's is more "Club-like" in atmosphere, a bit more expensive. CG has that open kitchen and atmosphere is "California trendy" with lots of noise and activity.
Menu is probably a bit more varied at CG, tho Shula's does offer more than just steak.