Let's talk about a scenario we can (hopefully) agree on. This is a common scenario too.

Say you setup the plane without thinking too much about linkages details but you want +/- 1 inch rudder travel when its all done.

1) You try it out, and find you have a +/- 2 inch swing... so you program the radio to cut down rudder servo travel to 50%, and you're done.

2) You try it out, and find you have a +/- 2 inch swing... so you rearrange the linkage connections to cut this down to +/- 1 inch without changing the (100%) servo travel.

Now, one of these responses will give both greater resolution and lower battery drain at a given rudder deflection. Do we all agree?