JP1 was also still a bit of an experiment in CG. They didn't want to push themselves into too many shots because they didn't know how well it was going to work in the first place. T2 only had maybe a dozen or so shots of the T-1000 that were CG, the rest were practical FX.
Another thing that points out CG as being such is animation quality. I remember a shot in one of those Sci Fi Channel "giant monster of the week" Originals where a giant snake got decapitated. Now, we're talking about a flesh and blood creature here. The head should have squashed and deformed a bit, like a half deflated basketball, but the way it was animated, the head bounced on the floor like it was a solid bowling ball. Granted, those SFCO's aren't Hollywood level, but you'd think someone would have caught that in dailies, or at least thought of it in planning the shot originally.
But to build on a comment above, yes, focus and lighting is definitely being ignored in CG, either by choice or by incompetence. Part of that I think is pride - they're so glad they created this uber-detailed CG model that they want to show it off and make sure people see all the work they put into it, so they keep everything sharp and clear and well-lit instead of doing what makes the shot look convincing.