I'll assume your big old grin means your kidding about the serve being good, since we all know the alignment trumps a bad serve.
I'm really not sure what you're getting at with the "verify the position move in respect with different servers..." comment. But my take...
The setter's early movement is often very different in 1 v. 5. In 1 she's trying to time the overlap with 2, in front of her, to get to the net. In 5, she's often (usually?) lined up right behind the 4, both pulled up to the net. In this case, she's often got a couple of steps to give before she would overlap the 6, to her right, on her way to the right side of the net.
That's assuming, of course, that the setter in 1 and the 2 are pulled back in serve/receive, not up on the net mirroring when the setter is at 5.