I think your are missing my point. My point is that maybe the Redbull wing is deflecting more because it is producing more downforce, not because it has a fancy construction.
How do you know the wing does not deflect linearly? Have you tested it, or got some real data? How do you know what loads are on all the different wings while they are driving around the track?
In Australia Vettel was 17km/h faster through the high speed chicane at Turn 11 than Hamiltonís McLaren and more like 25km/h faster than the midfield teams. The only way this happened was because the car had more downforce. More downforce means more load on the wing, and more load on the wing mean more deflection.
Last year everybody was complainiing that RB had some trick illegal suspension that was lowering the car in qualifying. Turns out it was the blown diffuser producing more downforce and pushing the car lower to the road.
This year everybody was saying RB had some trick lightweight KERS when they didn’t use it in qualifying. That it was there to help them at the start and that it took a long time to recharge. Turns out they didn’t use it in qualifying because it wasn’t fitted to the car.
Most of the time the simple logical answer is the right one.
More downforce = more wing deflection.