Between a fork built with tange and any other material, including other steel types, I think those differences alone will make comparing the difference of perceived ride of a QR to a thru-axle impossible.

But actually I see no reason at all for a thru-axle to have any difference in ride what so ever. The materials the frame and fork are made from as well as how they are constructed from the thickness of the tubes, type of material and for CF even the layup and type of cloth used will make a difference to the way we perceive the road feel.

Operationally, for the very few flats I have, it's been no issue having to look for the hex key to unscrew the thru-axle on my current bike. It doesn't slow one down as much as I first imagined prior to owning one.