The real take away is that apple should sell a keyboard and trackpad combo that is laid out like a macbook body, not that they should make a hybrid device
https://www.apple.com/shop/product/MJQJ3LL/A/magic-keyboard-...
Most of the space difference seems to come to the smaller space bar. Tab, caps, and shift on left and delete, return, and shift on right. And the brackets, plus, and minus.
Other than that, the actual letters seem identical.