I think they are the same size. Yeah, I was hoping defrost/floor would work but nope, had to go to the full defrost as you mentioned to keep the windshield clear. Was constantly switching between the 2 modes to keep warm but here, it rarely snows when it's that cold and I'll assume it was a once in a lifetime situation when I would actually have to be out.. I didn't see bare pavement until I got within the Boston suburbs. I'll never forget it. These I-VTM4 Hondas with snow tires are the setup to have if you have to be out in the snow. I did another trip with the Ridgeline last winter picking up my other daughter for xmas break on a hilly back road and interstate trip on I-88. On that day there were snow squalls that covered a good part of the state. At times visibility was poor but the Ridgeline was Most impressive, I often couldn't tell how fast I could push it because it felt so sure footed. Heat output for the cabin and the windshield that day was aplenty. I'm hoping the PP to be just be as good or better. I've had CRV's with Blizzaks that were awesome as well.