In what way? It outsold the 1973 Mustang by tens of thousands. It was the perfect answer to the gas shortages of the 1970's. If it wasn't for the Mustang II, there would be no mustangs made today.
Awful styling and just butt ugly.
The Mustang II production was 385,993 units the first year. The big 1973 Mustang total reached 134,867, but the 1974 version was within "10 percent of the original Mustang's 12-month production record of 418,812." Over five years the Mustang II recorded four of the ten top model year Mustang sales.

If it wasn’t for the Mustang II, there would be no mustangs made today.
I get your point, but sad.
People still wanted muscle cars.
Now Ford is going electric, subsidized by the Bite me admin., while still making very nice Mustangs and trucks.