1/4 mile car front end alignment
I would say it is a "normal" function. The UCA and LCA swing in different arcs simply because they are not equal lengths. The more suspension travel, the greater the camber change.
From my limited knowledge, I think you are right on track with setting up your suspension at the track/race attitude.
It is like the caster setting, going for stability at higher speeds instead of easy turning into the driveway.
Good luck!
Denny