My T75 was a 1968 and had the miter cross fence that had the protractor like half circle with large marks for the degrees. The tubular outrigger was a later model. Not sure how the miter worked on the later one but mine was accurate to about 1/10 of a degree and would return to square after the drop pin was adjusted. The later models had the ballbearing fence that folds down and a red stop button near the floor on the left side. If I were buying one now the later model would be my choice. I bought it used in late 80s to replace a new SCM Slider and ran it up till 1999 when I bought the T72A I still have.
Mine did not have a scoring saw and really never felt like I needed one. The T72 has a electronic adjusting scoring saw. We use it when cutting Melimine, a rare occasion at our shop but most of the time it is out of the saw. Hardwood ply is no problem to cut without scoring. Over all I like everything about the T72 better than the T 75. Ours is pretty much non electric with hydro tilt and raise. Crank controlled rip fence on ball bearings and manual stops on the cross fence. The digital readout for fence, tilt and raise lower started going out a year ago but with some help from others traced the problem to a faulty wire.
The T72 A that has all the electronic movement is one they are having trouble getting parts for so that one I would avoid.
One big advantage of a T75 is in a small shop the foot print is pretty small for a saw that will cut 8’ sheets.
I lust after a short stroke T17 or Panhans 609 but in reality my T72 can do anything these saws can and need the floor space.