Can't be sure with those photos and the way you're sitting, but it looks like your seat on the two other bikes might be too far back. Hang a plumb line from the bottom of your knee with your crank arm level and forward (i.e. at 3 o'clock for the right crank) and it should go right through the pedal axle.

That would only be likely if you had the seat way back on the rails, and/or were a true mutant.

The fore/aft position on the new cross-check seems reasonable, and it looks like you have the right number of chromosomes. So maybe it's just an optical illusion.

Make sure you don't attach any more pictures. At least not THOSE pictures.