Depending on:

- Stem height
- Stem reach
- Handlebar reach
- Seatpost height
- Seatpost setback

One frame size up or down can be the same bike. I don't think the frame size matters, the relationship of the rider to the contact points and how you arrive at that is the important part. The frame is just a hunk of metal holding things in the right position.

This doesn't apply for things like seat tube/head tube angles, wheel base and those sorts of things and their effect on "ride".