Thanks Acadian, but I'm stuck using a PS3 so no console trickery for me.
You might be able to try the same thing by simply creating a new Altmer and trying to test the distance they can fist hit the wall in their prison cell. Note carefully where they are standing etc. Then repeat with a Bosmer.
More accurate but a little more work would be to take and Altmer up to the end of the tutorial, but don't exit. Stand at the exit with a sword in your hand and use your last chance click on the gate to turn into a Bosmer and then try?
Just a couple thoughts.