Brake Disc Pads problems of the 2012 Honda Pilot

My Honda has 60k miles on it. In October, I noticed vibration and shaking when braking at high speeds. I had my pads replaced and my rotors machined. Here it is a few months later and I'm having the same issues, the car shakes and vibrates severely when going downhill.

When driving on the highway and braking the steering wheel shakes. Confirmed by dealership: warped rotors/ limited brake pad use: to be precise 2 millimeters of brake pad use. Mileage is under 26,000, 2 & 1/2 year old car. I am an average driver. In my opinion to have the rotors warp with limited use on the brake pads leads me to believe that the rotors were defective from the start. However the dealership is stipulating wear and tear with a $600 bill including replacing my limited worn brake pads. I'm sure I am not the only owner with this defect. Absolutely absurd!.

When I purchased the vehicle new in may 2012, there was a severe 'pulsing' vibration when braking from speeds > 60mph. I took the vehicle back to the dealer, they said this was because it sat on the lot without being moved, and 'machined' the rust off the rotors, which seemed to have fixed the problem. Now the problem has reappeared at approximately 35000-40000 miles. Again the dealer says it is a problem with the rear rotors, and they need to be resurfaced and the brake pads replaced. I owned a 2004 Pilot and never experienced this problem with it in the 100,000 miles I drove it. My driving habits have not changed. There seems to be some sort of problem with the brake rotors on this model - braking distance is longer than my prior model and the vibration/pulsing is significant enough to cause a concern for safety.

When braking at speeds above 50 mph, there is a vibration at the steering wheel. I brought the vehicle to a Honda dealer and was told the front rotors should be refaced when the car needs new brake pads. I have had a 2006,2009, and 2012 Pilot. My driving habits have not changed, the mileage per year is consistent, and there has been no hard or excessive braking. I have not had this problem with the other model years. So, what's the problem? are the current rotors thinner or inferior?.