pipAT
pianow Well, they make clothes in different ways. PTQ may have more PhD holders than sampled piano developers do. The way I see it: PTQ uses knowledge of math and physics to model pianos and doesn't record so many samples . Sampled developers use their experience of recording, mastering techniques etc.
People could build houses with wood, bricks, concrete, steels as well as 3D print materials. PTQ is synth-like. Sampled ones are like brick-based walls. Both are difficult to handle. I appreciate all their devotions to the development of piano as a wonderful musical instrument.