They must have not known much because as I understand it Mazdas were made on the same ass'y line (both mine built in Edison NJ) probably by the same people and using the same parts except for some stuff like badging and grill etc.
So is it logical to say Mazda is different or better, the only way it could be better is if Mazda had people there with stricter build standards and I kind of doubt it.
There are a lot of things the same my '97 Ford vs '99 Mazda (and a lot different, but that's because they are different models and different gens). But everything I see in the 97 to me tends to heavier and more rugged compared to the 99, leaving aside that they are different models etc, just for instance if you lift the hoods I think the 97 is thicker metal, maybe my imagination, but it sure seems stiffer and heavier built.
It's true that the later Mazdas especially the B4 4x4, had a ton of stuff on them that you had to option on the Fords, but that's just model config differences. '08 was really the last year for the Mazdas, there were '09's but they were leftover '08's and at the end there were very limited choices as to configs and colors, for the Mazdas.
Got kind of off topic, anyway, my take on it is a B3 is a Ranger in all but name and a few, but not many, differences and they are minor, afaik. So one cannot praise the Mazda and condemn the Ranger in the same sentence because they are the same thing.