I'm just logically thinking why one vs the other would be harder on the tires. If I'm on the highway, driving without regen, and I'm too close to the car in front of me then I hit my brake. Same situation, with regen this time, I let off the accelerator. Same thing happens in either case. How is it different to the tire?
Difference is your adding a condition of immediate stop. That will be same agreed. But if your just saying low regeneration vs standard region, it has todo with energy absorption by the friction of the tires. The longer the duration of the slow down, less tire wear. Material(tire) doesn't disintegrate much over longer period of slowdown opposed to quick slow down.