I was actually just pointing out that FPS do actually have tank controls and you can't see off screen, RE4 still has tank controls the only difference is you now have a turret.
I don't think the comparison to FPS is valid at all.
Left and right strafe, they don't turn you, and you have full vision of anything around you with the right stick.
In FPS's you can see anything your characters eyes can see.
For example, in REMake, I recently got through a section where I pushed a book case aside and there was a closet behind it. I walk in and as soon as the camera angle changes to the view inside the closet there was a zombie there that lunges at me.
In game, Jills eyes would be staring at this zombie the moment she pushed the bookcase out of the way.
In an FPS, it would have been immediately apparent and would make sense.
With fixed camera angles, there's a disconnect of "This enemy would be plainly visible if I just had some semblance of camera controls, and the character would know of this enemies placement, and existance far earlier than this."