What I glean from this is that you really liked the way 32mm tires felt a lot more than your skinny 25mm racing tires. Which I would say that, yea, no doubt. Not really sure how much the al hybrid frame had anything to do with it. If your Fuji frame can fit 32’s, try them there and see what it feels like. I ride a steel frame originally designed around 25’s. When switched from 25 to 28, it was nothing. But from 28 to 32 and super smooth. A lightweight 35 is even better. A steel frame is going to be more comfortable all else being equal, so I would expect it was mostly the tires.