+1 FWIW we (son rides, I pay) are in the process of a long term fitting on three bikes (2 road, one TT). Two road bikes have frames of the exact geometry. Saddle setup is the same on both fore/aft and height. But the front is different (1cm) based on intended use, expected power.
The point being how and where you ride matters on your setup and the pelvic position (seat height, fore/aft, tilt and you) is the most important thing.
That is where a fitter can really help.