For me the fat tire/skinny tire issue has been a wash. I use skinnyish small tires. The volume of air in my small wheel tires is about the same as the volume of air in my large wheel tires, and I pump both up to 120 psi.

Since you are riding with tyres I wonder if where you are from has something to do with your opinion about potholes. While I agree that for a small pothole, the wheel does not drop into the bottom, the potholes that concern me are not that puny. Where I live, by the time we get around to March, roads that have significant cracks at the start of winter will have crater-like potholes. The town crews can't keep up with them. Worse, they are often filled with water, so in poor light you can't see how deep they are. They're a problem with small wheels. Definitely more of a jar than with the bigger wheels. By summer they have mostly been patched, and the worst roads get repaved.

This is the second time that I can recall that there seems to be a disconnect on the effect of potholes. I really think it has to do with the experience of where you live. Last spring on South Road in Bedford Massachusetts a pothole 2 meters long and 0.5 meters wide and 0.2 meters deep opened up over the course of 24 hours. Day 1 it wasn't there. Day 2 it was there, and filled with water. I should take some pictures this winter for the edification of those who don't get to experience the joys of potholes!

Speedo