My exact point was the same cut line. The kerf-body difference for both 1.8/1.2 and the 2.2/1.6 is the same 0.3 mm hence the same cut line. I even have a heavy-duty 2.8/2.2 aluminium blade that has the same cut line too.
With zero-clearance inserts in TS or CSMS, the kerf width does matter for the cut line position. With tracksaws not so - as long as the kerf-body thickness difference is the same, the cut line is the same too.